{
  "port": 9220,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "No IANA registration — commonly a vendor-private listener, often on printers.",
  "whatItIs": "9220 is unassigned in the IANA registry and unknown to nmap's services file. It turns up on multifunction office devices and other appliances as a vendor-chosen management or scan-related port, so the device's own documentation is the authority, not the port number. Confirm with a version scan against the actual host.",
  "exposure": {
    "verdict": "careful",
    "note": "Appliance-private ports are usually unauthenticated management surfaces; keep them on the device VLAN until you know exactly what answers."
  },
  "checkCommand": "nmap -sV -Pn -p 9220 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-services (port frequency and name table)",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}