{
  "port": 22939,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Unassigned on both TCP and UDP, with no service name anywhere in the public record.",
  "whatItIs": "IANA has 22939 inside the unassigned block 22801-22950; no vendor or protocol has claimed it. Nmap carries 'unknown' entries for both 22939/tcp and 22939/udp with low open-frequencies, enough to include the TCP side in the default scan set. There is no documented default that uses this number, so an open port means a locally chosen listener — a custom service, a tunnel endpoint, or a remapped container port.",
  "exposure": {
    "verdict": "careful",
    "note": "Decide from the fingerprint. An unnamed port carrying a real service still carries that service's risk."
  },
  "checkCommand": "nmap -Pn -sV -p 22939 --reason TARGET",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml",
      "kind": "iana"
    },
    {
      "title": "Nmap nmap-services frequency table",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}