| aaa |  | Diameter Protocol | Permanent | - | [RFC6733] |  | 
          
            | aaas |  | Diameter Protocol with Secure Transport | Permanent | - | [RFC6733] |  | 
          
            | about |  | about | Permanent | - | [RFC6694] |  | 
          
            | acap |  | application configuration access protocol | Permanent | - | [RFC2244] |  | 
          
            | acct |  | acct | Permanent | - | [RFC7565] |  | 
          
            | acd | prov/acd | acd | Provisional | - | [Michael_Hedenus] |  | 
          
            | acr | prov/acr | acr | Provisional | - | [OMA-OMNA] |  | 
          
            | adiumxtra | prov/adiumxtra | adiumxtra | Provisional | - | [Dave_Thaler] |  | 
          
            | adt | prov/adt | adt | Provisional | - | [SAP_SE] |  | 
          
            | afp | prov/afp | afp | Provisional | - | [Dave_Thaler] |  | 
          
            | afs |  | Andrew File System global file names | Provisional | - | [RFC1738] |  | 
          
            | aim | prov/aim | aim | Provisional | - | [Dave_Thaler] |  | 
          
            | amss | prov/amss | amss | Provisional | - | [RadioDNS_Project] |  | 
          
            | android | prov/android | android | Provisional | - | [Adam_Barth][https://developer.android.com/guide/topics/manifest/manifest-intro] |  | 
          
            | appdata | prov/appdata | appdata | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | apt | prov/apt | apt | Provisional | - | [Dave_Thaler] |  | 
          
            | ar | prov/ar | ar | Provisional | - | [Arweave_Team] |  | 
          
            | ari | prov/ari | ari | Provisional | - | [draft-ietf-dtn-ari-04] |  | 
          
            | ark | prov/ark | ark | Provisional | - | [ARK_agency][https://n2t.net/ark:/21206/10015] |  | 
          
            | at | prov/at | at 
      (see [reviewer notes]) | Provisional | - | [Bluesky_PBLLC][Paul_Frazee] |  | 
          
            | attachment | prov/attachment | attachment | Provisional | - | [Dave_Thaler] |  | 
          
            | aw | prov/aw | aw | Provisional | - | [Dave_Thaler] |  | 
          
            | barion | prov/barion | barion | Provisional | - | [Bíró_Tamás] |  | 
          
            | bb | historic/bb | bb | Historical | - | [IESG] |  | 
          
            | beshare | prov/beshare | beshare | Provisional | - | [Dave_Thaler] |  | 
          
            | bitcoin | prov/bitcoin | bitcoin | Provisional | - | [Dave_Thaler] |  | 
          
            | bitcoincash | prov/bitcoincash | bitcoincash | Provisional | - | [Corentin_Mercier] |  | 
          
            | bl | prov/bl | bluetooth (shortened) | Provisional | - | [Daniel_Cowling] |  | 
          
            | blob | prov/blob | blob | Provisional | - | [W3C_WebApps_Working_Group][Chris_Rebert] |  | 
          
            | bluetooth | prov/bluetooth | bluetooth | Provisional | - | [Daniel_Cowling] |  | 
          
            | bolo | prov/bolo | bolo | Provisional | - | [Dave_Thaler] |  | 
          
            | brid | prov/brid | brid | Provisional | - | [Jürgen_Grupp][Michael_Ranft][Sophie_Schenkel] |  | 
          
            | browserext | prov/browserext | browserext | Provisional | - | [Mike_Pietraszak] |  | 
          
            | cabal | prov/cabal | cabal | Provisional | - | [Frédéric_Wang][Cabal_Club] |  | 
          
            | calculator | prov/calculator | calculator | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | callto | prov/callto | callto | Provisional | - | [Alexey_Melnikov] |  | 
          
            | cap |  | Calendar Access Protocol | Permanent | - | [RFC4324] |  | 
          
            | cast | prov/cast | cast | Provisional | - | [Adam_Barth][https://developers.google.com/cast/docs/registration] |  | 
          
            | casts | prov/casts | casts | Provisional | - | [Adam_Barth][https://developers.google.com/cast/docs/registration] |  | 
          
            | chrome | prov/chrome | chrome | Provisional | - | [Dave_Thaler] |  | 
          
            | chrome-extension | prov/chrome-extension | chrome-extension | Provisional | - | [Dave_Thaler] |  | 
          
            | cid |  | content identifier | Permanent | - | [RFC2392] |  | 
          
            | coap |  | coap | Permanent | [RFC7252] | [RFC7252] |  | 
          
            | coap+tcp |  | coap+tcp 
      (see [reviewer notes]) | Permanent | [RFC8323] | [RFC8323] |  | 
          
            | coap+ws |  | coap+ws 
      (see [reviewer notes]) | Permanent | [RFC8323] | [RFC8323] |  | 
          
            | coaps |  | coaps | Permanent | [RFC7252] | [RFC7252] |  | 
          
            | coaps+tcp |  | coaps+tcp 
      (see [reviewer notes]) | Permanent | [RFC8323] | [RFC8323] |  | 
          
            | coaps+ws |  | coaps+ws 
      (see [reviewer notes]) | Permanent | [RFC8323] | [RFC8323] |  | 
          
            | com-eventbrite-attendee | prov/com-eventbrite-attendee | com-eventbrite-attendee | Provisional | - | [Bob_Van_Zant] |  | 
          
            | content | prov/content | content | Provisional | - | [Dave_Thaler] |  | 
          
            | content-type | prov/content-type | content-type | Provisional | - | [Donald_Eastlake] |  | 
          
            | crid |  | TV-Anytime Content Reference Identifier | Permanent | - | [RFC4078] |  | 
          
            | cstr | prov/cstr | cstr | Provisional | - | [Wang_Shu] |  | 
          
            | cvs | prov/cvs | cvs | Provisional | - | [Dave_Thaler] |  | 
          
            | dab | prov/dab | dab | Provisional | - | [RadioDNS_Project] |  | 
          
            | dat | prov/dat | dat | Provisional | - | [Frédéric_Wang][Paul_Frazee] |  | 
          
            | data |  | data | Permanent | - | [RFC2397] |  | 
          
            | dav |  | dav | Permanent | - | [RFC4918] |  | 
          
            | dhttp | prov/dhttp | dhttp 
      (see [reviewer notes]) | Provisional | - | [Qi_Zhou] |  | 
          
            | diaspora | prov/diaspora | diaspora | Provisional | - | [Dennis_Schubert] |  | 
          
            | dict |  | dictionary service protocol | Permanent | - | [RFC2229] |  | 
          
            | did | prov/did | did | Provisional | - | [W3C_Decentralized_Identifier_Working_Group][Manu_Sporny][Ivan_Herman] |  | 
          
            | dis | prov/dis | dis | Provisional | - | [Christophe_Meessen] |  | 
          
            | dlna-playcontainer | prov/dlna-playcontainer | dlna-playcontainer | Provisional | - | [DLNA] |  | 
          
            | dlna-playsingle | prov/dlna-playsingle | dlna-playsingle | Provisional | - | [DLNA] |  | 
          
            | dnp | prov/dnp | dnp | Provisional | - | [Shuai_Wang] |  | 
          
            | dns |  | Domain Name System | Permanent | - | [RFC4501] |  | 
          
            | dntp | prov/dntp | dntp | Provisional | - | [Hans-Dieter_A._Hiep] |  | 
          
            | doi |  | doi | Permanent | - | [DOI URI Scheme][Pierre-Anthony_Lemieux][DOI_Foundation] |  | 
          
            | dpp | prov/dpp | dpp | Provisional | - | [Gaurav_Jain][Wi-Fi_Alliance] |  | 
          
            | drm | prov/drm | drm | Provisional | - | [RadioDNS_Project] |  | 
          
            | drop | historic/drop | drop | Historical | - | [IESG] |  | 
          
            | dtmi | prov/dtmi | dtmi | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | dtn |  | DTNRG research and development | Permanent | - | [RFC9171] |  | 
          
            | dvb |  | dvb | Provisional | - | [draft-mcroberts-uri-dvb-09] |  | 
          
            | dvx | prov/dvx | dvx | Provisional | - | [Clemens_Bastian] |  | 
          
            | dweb | prov/dweb | dweb | Provisional | - | [Frédéric_Wang][Protocol_Labs] |  | 
          
            | ed2k | prov/ed2k | ed2k | Provisional | - | [Dave_Thaler] |  | 
          
            | eid | prov/eid | eid | Provisional | - | [eSIM_Group_GSM_Association] |  | 
          
            | elsi | prov/elsi | elsi | Provisional | - | [Kimmo_Lindholm] |  | 
          
            | embedded | prov/embedded | embedded | Provisional | - | [Peter_Hoddie] |  | 
          
            | ens | prov/ens | ens | Provisional | - | [Ricky_Bloomfield][Bradley_Nelson] |  | 
          
            | esim | prov/esim | esim | Provisional | - | [eSIM_Group_GSM_Association] |  | 
          
            | ethereum | prov/ethereum | ethereum | Provisional | - | [Frédéric_Wang][ligi] |  | 
          
            | example |  | example | Permanent | - | [RFC7595] |  | 
          
            | facetime | prov/facetime | facetime | Provisional | - | [Dave_Thaler] |  | 
          
            | fax |  | fax | Historical | - | [RFC2806][RFC3966] |  | 
          
            | feed | prov/feed | feed | Provisional | - | [Dave_Thaler] |  | 
          
            | feedready | prov/feedready | feedready | Provisional | - | [Mirko_Nosenzo] |  | 
          
            | fido | prov/fido | fido | Provisional | - | [Adam_Langley] |  | 
          
            | file |  | Host-specific file names | Permanent | - | [RFC8089] |  | 
          
            | filesystem | historic/filesystem | filesystem | Historical | - | [W3C_WebApps_Working_Group][Chris_Rebert] |  | 
          
            | finger | prov/finger | finger | Provisional | - | [Dave_Thaler] |  | 
          
            | first-run-pen-experience | prov/first-run-pen-experience | first-run-pen-experience | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | fish | prov/fish | fish | Provisional | - | [Dave_Thaler] |  | 
          
            | fm | prov/fm | fm | Provisional | - | [RadioDNS_Project] |  | 
          
            | ftp |  | File Transfer Protocol | Permanent | - | [RFC1738] |  | 
          
            | fuchsia-pkg | prov/fuchsia-pkg | fuchsia-pkg | Provisional | - | [Adam_Barth][https://fuchsia.googlesource.com/fuchsia/] |  | 
          
            | geo |  | Geographic Locations | Permanent | - | [RFC5870] |  | 
          
            | gg | prov/gg | gg | Provisional | - | [Dave_Thaler] |  | 
          
            | git | prov/git | git | Provisional | - | [Dave_Thaler] |  | 
          
            | gitoid | prov/gitoid | gitoid | Provisional | - | [Ed_Warnicke] |  | 
          
            | gizmoproject | prov/gizmoproject | gizmoproject | Provisional | - | [Dave_Thaler] |  | 
          
            | go |  | go | Permanent | - | [RFC3368] |  | 
          
            | gopher |  | The Gopher Protocol | Permanent | - | [RFC4266] |  | 
          
            | graph | prov/graph | graph | Provisional | - | [Alastair_Green] |  | 
          
            | grd | historic/grd | grd | Historical | - | [IESG] |  | 
          
            | gtalk | prov/gtalk | gtalk | Provisional | - | [Dave_Thaler] |  | 
          
            | h323 |  | H.323 | Permanent | - | [RFC3508] |  | 
          
            | ham |  | ham | Provisional | - | [RFC7046] |  | 
          
            | hcap | prov/hcap | hcap | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | hcp | prov/hcp | hcp | Provisional | - | [Alexey_Melnikov] |  | 
          
            | hs20 | prov/hs20 | hs20 | Provisional | - | [Bruno_Tomas] |  | 
          
            | http |  | Hypertext Transfer Protocol | Permanent | [RFC8615] | [RFC9110, Section 4.2.1] |  | 
          
            | https |  | Hypertext Transfer Protocol Secure | Permanent | [RFC8615] | [RFC9110, Section 4.2.2] |  | 
          
            | hxxp | prov/hxxp | hxxp | Provisional | - | [draft-salgado-hxxp-01] |  | 
          
            | hxxps | prov/hxxps | hxxps | Provisional | - | [draft-salgado-hxxp-01] |  | 
          
            | hydrazone | prov/hydrazone | hydrazone | Provisional | - | [Matthias_Merkel][https://tech.hydrazone.pro/uri/specification/hydrazone.txt] |  | 
          
            | hyper | prov/hyper | hyper | Provisional | - | [Frédéric_Wang][Paul_Frazee] |  | 
          
            | i0 | prov/i0 | i0 | Provisional | - | [Ember_Ana] |  | 
          
            | iax |  | Inter-Asterisk eXchange Version 2 | Permanent | - | [RFC5456] |  | 
          
            | icap |  | Internet Content Adaptation Protocol | Permanent | - | [RFC3507] |  | 
          
            | icon |  | icon | Provisional | - | [draft-lafayette-icon-uri-scheme-01] |  | 
          
            | ilstring | prov/ilstring | ilstring | Provisional | - | [OPC_Foundation][https://webstore.iec.ch/en/publication/77973] |  | 
          
            | im |  | Instant Messaging | Permanent | - | [RFC3860] |  | 
          
            | imap |  | internet message access protocol | Permanent | - | [RFC5092] |  | 
          
            | info |  | Information Assets with Identifiers in Public Namespaces. 
      [RFC4452] (section 3) defines an "info" registry 
        of public namespaces, which is maintained by NISO and can be accessed 
        from [http://info-uri.info/]. | Permanent | - | [RFC4452] |  | 
          
            | iotdisco | prov/iotdisco | iotdisco | Provisional | - | [Peter_Waher][https://www.iana.org/assignments/uri-schemes/prov/iotdisco.pdf] |  | 
          
            | ipfs | prov/ipfs | ipfs | Provisional | - | [Frédéric_Wang][Protocol_Labs] |  | 
          
            | ipn |  | ipn | Permanent | - | [RFC9758] |  | 
          
            | ipns | prov/ipns | ipns | Provisional | - | [Frédéric_Wang][Protocol_Labs] |  | 
          
            | ipp |  | Internet Printing Protocol | Permanent | - | [RFC3510] |  | 
          
            | ipps |  | Internet Printing Protocol over HTTPS | Permanent | - | [RFC7472] |  | 
          
            | irc | prov/irc | irc | Provisional | - | [Dave_Thaler] |  | 
          
            | irc6 | prov/irc6 | irc6 | Provisional | - | [Dave_Thaler] |  | 
          
            | ircs | prov/ircs | ircs | Provisional | - | [Dave_Thaler] |  | 
          
            | iris |  | Internet Registry Information Service | Permanent | - | [RFC3981] |  | 
          
            | iris.beep |  | iris.beep | Permanent | - | [RFC3983] |  | 
          
            | iris.lwz |  | iris.lwz | Permanent | - | [RFC4993] |  | 
          
            | iris.xpc |  | iris.xpc | Permanent | - | [RFC4992] |  | 
          
            | iris.xpcs |  | iris.xpcs | Permanent | - | [RFC4992] |  | 
          
            | isostore | prov/isostore | isostore | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | itms | prov/itms | itms | Provisional | - | [Dave_Thaler] |  | 
          
            | jabber | perm/jabber | jabber | Permanent | - | [Peter_Saint-Andre] |  | 
          
            | jar | prov/jar | jar | Provisional | - | [Dave_Thaler] |  | 
          
            | jms |  | Java Message Service | Provisional | - | [RFC6167] |  | 
          
            | keyparc | prov/keyparc | keyparc | Provisional | - | [Dave_Thaler] |  | 
          
            | lastfm | prov/lastfm | lastfm | Provisional | - | [Dave_Thaler] |  | 
          
            | lbry | prov/lbry | lbry | Provisional | - | [Alex_Grintsvayg] |  | 
          
            | ldap |  | Lightweight Directory Access Protocol | Permanent | - | [RFC4516] |  | 
          
            | ldaps | prov/ldaps | ldaps | Provisional | - | [Dave_Thaler] |  | 
          
            | leaptofrogans |  | leaptofrogans | Permanent | - | [RFC8589] |  | 
          
            | lid | prov/lid | lid | Provisional | - | [IS4] |  | 
          
            | linkid | prov/linkid | linkid | Provisional | - | [Christian_Nyffenegger] |  | 
          
            | lorawan | prov/lorawan | lorawan | Provisional | - | [OMA-DMSE] |  | 
          
            | lpa | prov/lpa | lpa | Provisional | - | [eSIM_Group_GSM_Association] |  | 
          
            | lvlt | prov/lvlt | lvlt | Provisional | - | [Alexander_Shishenko] |  | 
          
            | machineProvisioningProgressReporter | prov/machineProvisioningProgressReporter | Windows Autopilot Modern Device Management status updates | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | magnet | prov/magnet | magnet | Provisional | - | [Dave_Thaler] |  | 
          
            | mailserver |  | Access to data available from mail servers | Historical | - | [RFC6196] |  | 
          
            | mailto |  | Electronic mail address | Permanent | - | [RFC6068] |  | 
          
            | maps | prov/maps | maps | Provisional | - | [Dave_Thaler] |  | 
          
            | market | prov/market | market | Provisional | - | [Dave_Thaler] |  | 
          
            | matrix | prov/matrix | matrix | Provisional | - | [Hubert_Chathi] |  | 
          
            | message | prov/message | message | Provisional | - | [Dave_Thaler] |  | 
          
            | microsoft.windows.camera | prov/microsoft.windows.camera | microsoft.windows.camera | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | microsoft.windows.camera.multipicker | prov/microsoft.windows.camera.multipicker | microsoft.windows.camera.multipicker | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | microsoft.windows.camera.picker | prov/microsoft.windows.camera.picker | microsoft.windows.camera.picker | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | mid |  | message identifier | Permanent | - | [RFC2392] |  | 
          
            | mms | prov/mms | mms | Provisional | - | [Alexey_Melnikov] |  | 
          
            | modem |  | modem | Historical | - | [RFC2806][RFC3966] |  | 
          
            | mongodb | prov/mongodb | mongodb | Provisional | - | [Ignacio_Losiggio][Mongo_DB_Inc] |  | 
          
            | moz | prov/moz | moz | Provisional | - | [Joe_Hildebrand] |  | 
          
            | ms-access | prov/ms-access | ms-access | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-appinstaller | prov/ms-appinstaller | ms-appinstaller | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-browser-extension | prov/ms-browser-extension | ms-browser-extension | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-calculator | prov/ms-calculator | ms-calculator | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-drive-to | prov/ms-drive-to | ms-drive-to | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-enrollment | prov/ms-enrollment | ms-enrollment | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-excel | prov/ms-excel | ms-excel | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-eyecontrolspeech | prov/ms-eyecontrolspeech | ms-eyecontrolspeech | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-gamebarservices | prov/ms-gamebarservices | ms-gamebarservices | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-gamingoverlay | prov/ms-gamingoverlay | ms-gamingoverlay | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-getoffice | prov/ms-getoffice | ms-getoffice | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-help | prov/ms-help | ms-help | Provisional | - | [Alexey_Melnikov] |  | 
          
            | ms-infopath | prov/ms-infopath | ms-infopath | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-inputapp | prov/ms-inputapp | ms-inputapp | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-launchremotedesktop | prov/ms-launchremotedesktop | ms-launchremotedesktop | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-lockscreencomponent-config | prov/ms-lockscreencomponent-config | ms-lockscreencomponent-config | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-media-stream-id | prov/ms-media-stream-id | ms-media-stream-id | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-meetnow | prov/ms-meetnow | ms-meetnow | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-mixedrealitycapture | prov/ms-mixedrealitycapture | ms-mixedrealitycapture | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-mobileplans | prov/ms-mobileplans | ms-mobileplans | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-newsandinterests | prov/ms-newsandinterests | ms-newsandinterests | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-officeapp | prov/ms-officeapp | ms-officeapp | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-people | prov/ms-people | ms-people | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-personacard | prov/ms-personacard | ms-personacard | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-project | prov/ms-project | ms-project | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-powerpoint | prov/ms-powerpoint | ms-powerpoint | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-publisher | prov/ms-publisher | ms-publisher | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-recall | prov/ms-recall | ms-recall | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-remotedesktop | prov/ms-remotedesktop | ms-remotedesktop | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-remotedesktop-launch | prov/ms-remotedesktop-launch | ms-remotedesktop-launch | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-restoretabcompanion | prov/ms-restoretabcompanion | ms-restoretabcompanion | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-screenclip | prov/ms-screenclip | ms-screenclip | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-screensketch | prov/ms-screensketch | ms-screensketch | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-search | prov/ms-search | ms-search | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-search-repair | prov/ms-search-repair | ms-search-repair | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-secondary-screen-controller | prov/ms-secondary-screen-controller | ms-secondary-screen-controller | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-secondary-screen-setup | prov/ms-secondary-screen-setup | ms-secondary-screen-setup | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings | prov/ms-settings | ms-settings | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-airplanemode | prov/ms-settings-airplanemode | ms-settings-airplanemode | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-bluetooth | prov/ms-settings-bluetooth | ms-settings-bluetooth | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-camera | prov/ms-settings-camera | ms-settings-camera | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-cellular | prov/ms-settings-cellular | ms-settings-cellular | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-cloudstorage | prov/ms-settings-cloudstorage | ms-settings-cloudstorage | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-connectabledevices | prov/ms-settings-connectabledevices | ms-settings-connectabledevices | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-displays-topology | prov/ms-settings-displays-topology | ms-settings-displays-topology | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-emailandaccounts | prov/ms-settings-emailandaccounts | ms-settings-emailandaccounts | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-language | prov/ms-settings-language | ms-settings-language | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-location | prov/ms-settings-location | ms-settings-location | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-lock | prov/ms-settings-lock | ms-settings-lock | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-nfctransactions | prov/ms-settings-nfctransactions | ms-settings-nfctransactions | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-notifications | prov/ms-settings-notifications | ms-settings-notifications | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-power | prov/ms-settings-power | ms-settings-power | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-privacy | prov/ms-settings-privacy | ms-settings-privacy | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-proximity | prov/ms-settings-proximity | ms-settings-proximity | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-screenrotation | prov/ms-settings-screenrotation | ms-settings-screenrotation | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-wifi | prov/ms-settings-wifi | ms-settings-wifi | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-settings-workplace | prov/ms-settings-workplace | ms-settings-workplace | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-spd | prov/ms-spd | ms-spd | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-stickers | prov/ms-stickers | ms-stickers | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-sttoverlay | prov/ms-sttoverlay | ms-sttoverlay | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-transit-to | prov/ms-transit-to | ms-transit-to | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-useractivityset | prov/ms-useractivityset | ms-useractivityset | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-uup | prov/ms-uup | ms-uup | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-virtualtouchpad | prov/ms-virtualtouchpad | ms-virtualtouchpad | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-visio | prov/ms-visio | ms-visio | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-walk-to | prov/ms-walk-to | ms-walk-to | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-whiteboard | prov/ms-whiteboard | ms-whiteboard | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-whiteboard-cmd | prov/ms-whiteboard-cmd | ms-whiteboard-cmd | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-widgetboard | prov/ms-widgetboard | ms-widgetboard | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-widgets | prov/ms-widgets | ms-widgets | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | ms-word | prov/ms-word | ms-word | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | msnim | prov/msnim | msnim | Provisional | - | [Alexey_Melnikov] |  | 
          
            | msrp |  | Message Session Relay Protocol | Permanent | - | [RFC4975] |  | 
          
            | msrps |  | Message Session Relay Protocol Secure | Permanent | - | [RFC4975][RFC8873] |  | 
          
            | mss | prov/mss | mss | Provisional | - | [Jarmo_Miettinen] |  | 
          
            | mt | perm/mt | Matter protocol on-boarding payloads that are encoded for use in QR Codes and/or NFC Tags | Permanent | - | [Connectivity_Standards_Alliance] |  | 
          
            | mtqp |  | Message Tracking Query Protocol | Permanent | - | [RFC3887] |  | 
          
            | mtrust | prov/mtrust | mtrust | Provisional | - | [Egbert_von_Frankenberg] |  | 
          
            | mumble | prov/mumble | mumble | Provisional | - | [Dave_Thaler] |  | 
          
            | mupdate |  | Mailbox Update (MUPDATE) Protocol | Permanent | - | [RFC3656] |  | 
          
            | mvn | prov/mvn | mvn | Provisional | - | [Dave_Thaler] |  | 
          
            | mvrp | prov/mvrp | mvrp
      (see [reviewer notes]) | Provisional | - | [Antonio_Walker] |  | 
          
            | mvrps | prov/mvrps | mvrps
      (see [reviewer notes]) | Provisional | - | [Antonio_Walker] |  | 
          
            | news |  | USENET news | Permanent | - | [RFC5538] |  | 
          
            | nfs |  | network file system protocol | Permanent | - | [RFC2224] |  | 
          
            | ni |  | ni | Permanent | - | [RFC6920] |  | 
          
            | nih |  | nih | Permanent | - | [RFC6920] |  | 
          
            | nntp |  | USENET news using NNTP access | Permanent | - | [RFC5538] |  | 
          
            | notes | prov/notes | notes | Provisional | - | [draft-dconmy-notes-uri-scheme-02] |  | 
          
            | num | prov/num | Namespace Utility Modules | Provisional | - | [Elliott_Brown][https://www.numprotocol.com/specification] |  | 
          
            | ocf | prov/ocf | ocf | Provisional | - | [Dave_Thaler] |  | 
          
            | oid | prov/oid | oid | Provisional | - | [draft-larmouth-oid-iri-04] |  | 
          
            | onenote | prov/onenote | onenote | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | onenote-cmd | prov/onenote-cmd | onenote-cmd | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | opaquelocktoken |  | opaquelocktokent | Permanent | - | [RFC4918] |  | 
          
            | openid | prov/openid | OpenID Connect | Provisional | - | [OpenID_Foundation_Artifact_Binding_Working_Group][OpenID Connect Core 1.0, Section 7.3] |  | 
          
            | openpgp4fpr | prov/openpgp4fpr | openpgp4fpr | Provisional | - | [Wiktor_Kwapisiewicz] |  | 
          
            | otpauth | prov/otpauth | otpauth | Provisional | - | [Frédéric_Wang][Thomas_Habets] |  | 
          
            | p1 | historic/p1 | p1 | Historical | - | [IESG] |  | 
          
            | pack | historic/pack | pack | Historical | - | [draft-shur-pack-uri-scheme-05] |  | 
          
            | palm | prov/palm | palm | Provisional | - | [Dave_Thaler] |  | 
          
            | paparazzi | prov/paparazzi | paparazzi | Provisional | - | [Dave_Thaler] |  | 
          
            | payment | historic/payment | payment | Historical | - | [IESG] |  | 
          
            | payto | prov/payto | payto | Provisional | - | [RFC8905] |  | 
          
            | pkcs11 |  | PKCS#11 | Permanent | - | [RFC7512] |  | 
          
            | platform | prov/platform | platform | Provisional | - | [Dave_Thaler] |  | 
          
            | pop |  | Post Office Protocol v3 | Permanent | - | [RFC2384] |  | 
          
            | pres |  | Presence | Permanent | - | [RFC3859] |  | 
          
            | prospero |  | Prospero Directory Service | Historical | - | [RFC4157] |  | 
          
            | proxy | prov/proxy | proxy | Provisional | - | [Dave_Thaler] |  | 
          
            | pwid | prov/pwid | pwid | Provisional | - | [Eld_Zierau] |  | 
          
            | psyc | prov/psyc | psyc | Provisional | - | [Dave_Thaler] |  | 
          
            | pttp | prov/pttp | pttp | Provisional | - | [Tony_Deng][Tuan_Hoang][Bob_Hinkle][Mark_Chen] |  | 
          
            | qb | prov/qb | qb | Provisional | - | [Jan_Pokorny] |  | 
          
            | query | prov/query | query | Provisional | - | [Dave_Thaler] |  | 
          
            | quic-transport | prov/quic-transport | quic-transport | Provisional | - | [draft-vvv-webtransport-quic-00] |  | 
          
            | redis | prov/redis | redis | Provisional | - | [Chris_Rebert] |  | 
          
            | rediss | prov/rediss | rediss | Provisional | - | [Chris_Rebert] |  | 
          
            | reload |  | reload | Permanent | - | [RFC6940] |  | 
          
            | res | prov/res | res | Provisional | - | [Alexey_Melnikov] |  | 
          
            | resource | prov/resource | resource | Provisional | - | [Dave_Thaler] |  | 
          
            | rmi | prov/rmi | rmi | Provisional | - | [Dave_Thaler] |  | 
          
            | rsync |  | rsync | Provisional | - | [RFC5781] |  | 
          
            | rtmfp | prov/rtmfp | rtmfp | Provisional | - | [RFC7425] |  | 
          
            | rtmp | prov/rtmp | rtmp | Provisional | - | [Dave_Thaler] |  | 
          
            | rtsp |  | Real-Time Streaming Protocol (RTSP) | Permanent | - | [RFC2326][RFC7826] |  | 
          
            | rtsps |  | Real-Time Streaming Protocol (RTSP) over TLS | Permanent | - | [RFC2326][RFC7826] |  | 
          
            | rtspu |  | Real-Time Streaming Protocol (RTSP) over unreliable datagram transport | Permanent | - | [RFC2326] |  | 
          
            | sarif | prov/sarif | sarif | Provisional | - | [OASIS_Open][Michael_C_Fanning][David_Keaton] |  | 
          
            | secondlife | prov/secondlife | query | Provisional | - | [Dave_Thaler] |  | 
          
            | secret-token | prov/secret-token | secret-token | Provisional | - | [RFC8959] |  | 
          
            | service |  | service location | Permanent | - | [RFC2609] |  | 
          
            | session |  | session | Permanent | - | [RFC6787] |  | 
          
            | sftp | prov/sftp | query | Provisional | - | [Dave_Thaler] |  | 
          
            | sgn | prov/sgn | sgn | Provisional | - | [Dave_Thaler] |  | 
          
            | shc | prov/shc | shc | Provisional | - | [Josh_Mandel] |  | 
          
            | shelter | prov/shelter | shelter | Provisional | - | [okTurtles_Foundation] |  | 
          
            | shttp (OBSOLETE) |  | Secure Hypertext Transfer Protocol | Permanent | - | [RFC2660][Status change of HTTP experiments to Historic] |  | 
          
            | sieve |  | ManageSieve Protocol | Permanent | - | [RFC5804] |  | 
          
            | simpleledger | prov/simpleledger | simpleledger | Provisional | - | [James_Cramer] |  | 
          
            | simplex | prov/simplex | simplex | Provisional | - | [Evgeny_Poberezkin] |  | 
          
            | sip |  | session initiation protocol | Permanent | - | [RFC3261] |  | 
          
            | sips |  | secure session initiation protocol | Permanent | - | [RFC3261] |  | 
          
            | skype | prov/skype | skype | Provisional | - | [Alexey_Melnikov] |  | 
          
            | smb | prov/smb | smb | Provisional | - | [Dave_Thaler] |  | 
          
            | smp | prov/smp | smp | Provisional | - | [Evgeny_Poberezkin] |  | 
          
            | sms |  | Short Message Service | Permanent | - | [RFC5724] |  | 
          
            | smtp | prov/smtp | smtp | Provisional | - | [draft-melnikov-smime-msa-to-mda-03] |  | 
          
            | snews |  | NNTP over SSL/TLS | Historical | - | [RFC5538] |  | 
          
            | snmp |  | Simple Network Management Protocol | Permanent | - | [RFC4088] |  | 
          
            | soap.beep |  | soap.beep | Permanent | - | [RFC4227] |  | 
          
            | soap.beeps |  | soap.beeps | Permanent | - | [RFC4227] |  | 
          
            | soldat | prov/soldat | soldat | Provisional | - | [Dave_Thaler] |  | 
          
            | spiffe | prov/spiffe | spiffe | Provisional | - | [Evan_Gilman] |  | 
          
            | spotify | prov/spotify | spotify | Provisional | - | [Dave_Thaler] |  | 
          
            | ssb | prov/ssb | ssb | Provisional | - | [Frédéric_Wang][Secure_Scuttlebutt_Consortium] |  | 
          
            | ssh | prov/ssh | ssh | Provisional | - | [Dave_Thaler] |  | 
          
            | starknet | prov/starknet | starknet | Provisional | - | [Abraham_Makovetsky] |  | 
          
            | steam | prov/steam | steam | Provisional | - | [Dave_Thaler] |  | 
          
            | stun |  | stun | Permanent | - | [RFC7064] |  | 
          
            | stuns |  | stuns | Permanent | - | [RFC7064] |  | 
          
            | submit | prov/submit | submit | Provisional | - | [draft-melnikov-smime-msa-to-mda-03] |  | 
          
            | svn | prov/svn | svn | Provisional | - | [Dave_Thaler] |  | 
          
            | swh | prov/swh | swh | Provisional | - | [Software_Heritage][Stefano_Zacchiroli] |  | 
          
            | swid | prov/swid | swid 
      (see [reviewer notes]) | Provisional | - | [RFC9393, Section 5.1] |  | 
          
            | swidpath | prov/swidpath | swidpath 
      (see [reviewer notes]) | Provisional | - | [RFC9393, Section 5.2] |  | 
          
            | tag |  | tag | Permanent | - | [RFC4151] |  | 
          
            | taler | prov/taler | taler | Provisional | - | [draft-grothoff-taler-01] |  | 
          
            | teamspeak | prov/teamspeak | teamspeak | Provisional | - | [Dave_Thaler] |  | 
          
            | teapot | prov/teapot | teapot | Provisional | - | [Karwan_Stark] |  | 
          
            | teapots | prov/teapots | teapots | Provisional | - | [Karwan_Stark] |  | 
          
            | tel |  | telephone | Permanent | - | [RFC3966][RFC5341] |  | 
          
            | teliaeid | prov/teliaeid | teliaeid | Provisional | - | [Peter_Lewandowski] |  | 
          
            | telnet |  | Reference to interactive sessions | Permanent | - | [RFC4248] |  | 
          
            | tftp |  | Trivial File Transfer Protocol | Permanent | - | [RFC3617] |  | 
          
            | things | prov/things | things | Provisional | - | [Dave_Thaler] |  | 
          
            | thismessage | perm/thismessage | multipart/related relative reference resolution | Permanent | - | [RFC2557] |  | 
          
            | thzp | historic/thzp | thzp | Historical | - | [IESG] |  | 
          
            | tip |  | Transaction Internet Protocol | Permanent | - | [RFC2371] |  | 
          
            | tn3270 |  | Interactive 3270 emulation sessions | Permanent | - | [RFC6270] |  | 
          
            | tool | prov/tool | tool | Provisional | - | [Matthias_Merkel] |  | 
          
            | turn |  | turn | Permanent | - | [RFC7065] |  | 
          
            | turns |  | turns | Permanent | - | [RFC7065] |  | 
          
            | tv |  | TV Broadcasts | Permanent | - | [RFC2838] |  | 
          
            | udp | prov/udp | udp | Provisional | - | [Dave_Thaler] |  | 
          
            | unreal | prov/unreal | unreal | Provisional | - | [Dave_Thaler] |  | 
          
            | upt | historic/upt | upt | Historical | - | [IESG] |  | 
          
            | urn |  | Uniform Resource Names | Permanent | - | [RFC8141][IANA registry urn-namespaces] |  | 
          
            | ut2004 | prov/ut2004 | ut2004 | Provisional | - | [Dave_Thaler] |  | 
          
            | uuid-in-package | prov/uuid-in-package | uuid-in-package | Provisional | - | [Kunihiko_Sakamoto] |  | 
          
            | v-event | prov/v-event | v-event | Provisional | - | [draft-menderico-v-event-uri-00] |  | 
          
            | vemmi |  | versatile multimedia interface | Permanent | - | [RFC2122] |  | 
          
            | ventrilo | prov/ventrilo | ventrilo | Provisional | - | [Dave_Thaler] |  | 
          
            | ves | prov/ves | ves | Provisional | - | [Jim_Zubov] |  | 
          
            | videotex | historic/videotex | videotex | Historical | - | [draft-mavrakis-videotex-url-spec-01][RFC2122][RFC3986] |  | 
          
            | vnc |  | Remote Framebuffer Protocol | Permanent | - | [RFC7869] |  | 
          
            | view-source | prov/view-source | view-source | Provisional | - | [Mykyta_Yevstifeyev] |  | 
          
            | vscode | prov/vscode | vscode | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | vscode-insiders | prov/vscode-insiders | vscode-insiders | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | vsls | prov/vsls | vsls | Provisional | - | [urischemeowners_at_microsoft.com] |  | 
          
            | w3 | prov/w3 | w3 
      (see [reviewer notes]) | Provisional | - | [Qi_Zhou] |  | 
          
            | wais |  | Wide Area Information Servers | Historical | - | [RFC4156] |  | 
          
            | wasm | prov/wasm | wasm | Provisional | - | [W3C_WebAssembly_Community_Group] |  | 
          
            | wasm-js | prov/wasm-js | wasm-js | Provisional | - | [W3C_WebAssembly_Community_Group] |  | 
          
            | web3 | prov/web3 | web3 | Provisional | - | [Qi_Zhou] |  | 
          
            | wcr | prov/wcr | wcr | Provisional | - | [Jason_Dzubak] |  | 
          
            | webcal | prov/webcal | webcal | Provisional | - | [Dave_Thaler] |  | 
          
            | web+ap | prov/web+ap | web+ap | Provisional | - | [Soni_L.] |  | 
          
            | wifi | prov/wifi | wifi | Provisional | - | [Wi-Fi_Alliance][Jun_Tian] |  | 
          
            | wpid | prov/wpid | wpid | Historical | - | [Eld_Zierau] |  | 
          
            | ws |  | WebSocket connections | Permanent | [RFC8307] | [RFC6455] |  | 
          
            | wss |  | Encrypted WebSocket connections | Permanent | [RFC8307] | [RFC6455] |  | 
          
            | wtai | prov/wtai | wtai | Provisional | - | [Dave_Thaler] |  | 
          
            | wyciwyg | prov/wyciwyg | wyciwyg | Provisional | - | [Dave_Thaler] |  | 
          
            | xcompute | prov/xcompute | xcompute | Provisional | - | [Graham_Orr] |  | 
          
            | xcon |  | xcon | Permanent | - | [RFC6501] |  | 
          
            | xcon-userid |  | xcon-userid | Permanent | - | [RFC6501] |  | 
          
            | xfire | prov/xfire | xfire | Provisional | - | [Dave_Thaler] |  | 
          
            | xmlrpc.beep |  | xmlrpc.beep | Permanent | - | [RFC3529] |  | 
          
            | xmlrpc.beeps |  | xmlrpc.beeps | Permanent | - | [RFC3529] |  | 
          
            | xmpp |  | Extensible Messaging and Presence Protocol | Permanent | - | [RFC5122] |  | 
          
            | xftp | prov/xftp | xftp | Provisional | - | [Evgeny_Poberezkin] |  | 
          
            | xrcp | prov/xrcp | xrcp | Provisional | - | [Evgeny_Poberezkin] |  | 
          
            | xri | prov/xri | xri | Provisional | - | [Dave_Thaler] |  | 
          
            | ymsgr | prov/ymsgr | ymsgr | Provisional | - | [Dave_Thaler] |  | 
          
            | z39.50 |  | Z39.50 information access | Historical | - | [RFC1738][RFC2056] |  | 
          
            | z39.50r |  | Z39.50 Retrieval | Permanent | - | [RFC2056] |  | 
          
            | z39.50s |  | Z39.50 Session | Permanent | - | [RFC2056] |  |