{
  "id": "port/1021",
  "family": "port",
  "slug": "1021",
  "title": "Port 1021 — exp1",
  "summary": "Well-known port 1021 (tcp/udp/sctp/dccp): RFC3692-style Experiment 1. Service name: exp1. Referenced in RFC4727, RFC6335.",
  "kind": "port",
  "status": "standard",
  "verification": "verified",
  "tier": "A",
  "source_url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv",
  "source_version": "IANA registry, Last-Modified: Fri, 29 May 2026 01:11:28 GMT",
  "retrieved_date": "2026-05-29",
  "ext_type": "iana-registry-row@1",
  "ext": {
    "value": 1021,
    "reference_rfcs": [
      "RFC4727",
      "RFC6335"
    ],
    "transports": [
      "tcp",
      "udp",
      "sctp",
      "dccp"
    ],
    "raw_columns": {
      "Service Name": "exp1",
      "Port Number": "1021",
      "Transport Protocol": "tcp",
      "Description": "RFC3692-style Experiment 1",
      "Assignee": "[IESG]",
      "Contact": "[IETF_Chair]",
      "Registration Date": "",
      "Modification Date": "",
      "Reference": "[1][RFC4727][RFC6335]",
      "Service Code": "",
      "Unauthorized Use Reported": "",
      "Assignment Notes": ""
    }
  },
  "updated": "2026-05-29"
}