Also unassigned, seven ports below 7777 — no registered service, no default product.
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.
Expose with care
Nothing about the number implies safety; identify the listener, and if it belongs to a game or application server cluster, rate that service instead.
$ nmap -Pn -sV -p 7770 TARGETSeen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.