{
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    "abstract": "This document defines the procedures that the Internet Assigned Numbers Authority (IANA) uses when handling assignment and other requests related to the Service Name and Transport Protocol Port Number registry. It also discusses the rationale and principles behind these procedures and how they facilitate the long-term sustainability of the registry. This document updates IANA's procedures by obsoleting the previous UDP and TCP port assignment procedures defined in Sections 8 and 9.1 of the IANA Allocation Guidelines, and it updates the IANA service name and port assignment procedures for UDP-Lite, the Datagram Congestion Control Protocol (DCCP), and the Stream Control Transmission Protocol (SCTP). It also updates the DNS SRV specification to clarify what a service name is and how it is registered. This memo documents an Internet Best Current Practice.",
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    "authors": [
      {
        "name": "Michelle Cotton"
      },
      {
        "name": "Lars Eggert"
      },
      {
        "name": "Dr. Joseph D. Touch"
      },
      {
        "name": "Magnus Westerlund"
      },
      {
        "name": "Stuart Cheshire"
      }
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      "confidence": "high",
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      "confidence": "high",
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      "originalValue": null,
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.947Z",
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      "confidence": "high",
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      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
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    "docNumber": "6335",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
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    "docTitle": "Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
    },
    "doi": "10.17487/RFC6335",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
    },
    "href": "https://doi.org/10.17487/RFC6335",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
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    "keywords": [
      "IANA",
      "Transport",
      "Port Numbers"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "IANA",
        "Transport",
        "Ports",
        "Port Numbers",
        "Allocation",
        "Assignment",
        "Procedures"
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      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:49:18.027Z",
      "version": "extractDocs.js@commit:2c3fb02c87f9"
    },
    "pages": "33",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
    },
    "publicationDate": "2011-08-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
    },
    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
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        "RFC959",
        "RFC1078",
        "RFC1340",
        "RFC1700",
        "RFC2957",
        "RFC3232",
        "RFC3692",
        "RFC4342",
        "RFC4844",
        "RFC5237",
        "RFC5389",
        "RFC5766",
        "orphan/RFC6335/h:9e9239ad",
        "orphan/RFC6335/h:61f4227b",
        "orphan/RFC6335/h:d52a0964",
        "orphan/RFC6335/h:35221c26",
        "orphan/RFC6335/h:67ebde00",
        "orphan/RFC6335/h:d6b81822",
        "orphan/RFC6335/h:2da1eb30",
        "orphan/RFC6335/h:dd48f47a",
        "orphan/RFC6335/h:d96c6ec4"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=35 proseBlocks=40 skippedAnchorBlocks=38",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
      },
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        "INCITS.X3.4.1986",
        "RFC768",
        "RFC793",
        "RFC2119",
        "RFC2780",
        "RFC2782",
        "RFC3828",
        "RFC4020",
        "RFC4340",
        "RFC4727",
        "RFC4960",
        "RFC5226",
        "RFC5234",
        "RFC5595"
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        "confidence": "high",
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        "originalValue": [
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          "RFC768",
          "RFC793",
          "RFC2119",
          "RFC2780",
          "RFC2782",
          "RFC3828",
          "RFC4020",
          "RFC4340",
          "RFC4727",
          "RFC4960",
          "RFC5226",
          "RFC5234",
          "RFC5595"
        ],
        "overridden": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-09T21:04:44.393Z",
        "version": "extractDocs.js@commit:01cb8ce286c5"
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    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc6335/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
      "updated": "2026-10-08T22:36:40.948Z",
      "version": "extractDocs.js@commit:73d31737e622"
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      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
      },
      "amends": [
        "RFC2780",
        "RFC2782",
        "RFC3828",
        "RFC4340",
        "RFC4960",
        "RFC5595"
      ],
      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
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      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
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      "errataUrl": [
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        "https://www.rfc-editor.org/errata_search.php?rfc=6335",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc6335.html"
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      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
      },
      "statusNote": "Best Current Practice",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6335/",
        "updated": "2026-10-08T22:36:40.948Z",
        "version": "extractDocs.js@commit:73d31737e622"
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}