{
  "port": 7770,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Also unassigned, seven ports below 7777 — no registered service, no default product.",
  "whatItIs": "7770 falls inside IANA's unassigned 7748-7776 range and has no service name in Nmap's database, which puts it at roughly 0.015% open-port frequency. Its only notable feature is proximity: hosts running game or application servers around 7777 sometimes have neighbours in this range because an operator assigned a block by hand.",
  "exposure": {
    "verdict": "careful",
    "note": "Nothing about the number implies safety; identify the listener, and if it belongs to a game or application server cluster, rate that service instead."
  },
  "checkCommand": "nmap -Pn -sV -p 7770 TARGET",
  "links": [
    {
      "title": "IANA port registry — 7770 (unassigned)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=7770",
      "kind": "iana"
    }
  ]
}