whatportis.com

Port 55002 services

2 entries are registered on port 5500. It is a registered port (1024–49151) — IANA records an assignee, but nothing stops other software from listening here, which is why the number carries more than one entry.

entries
2

services registered on this number

transport
tcp · udp

2 transports in use

in transit
0/2

entries encrypted on the wire

worst risk
6/10

1 of 2 iana-registered

Services on this port

ranked by lookups
portservicerisk
:5500VNC Viewer Listenercaution
:5500Hotline / VNC reverse-connection listenerrisk

01VNC Viewer Listenertcp · unofficial · risk 4/10

Port 5500 is primarily associated with Virtual Network Computing (VNC) in 'listening' mode, allowing a server-side VNC viewer to wait for remote client connections. This facilitates reverse connections for remote desktop sharing and remote support. Standard VNC normally involves the client connecting to the remote server, but in some deployments, the server initiates a connection back to a listening viewer to bypass firewalls and NAT restrictions.

port 5500 as VNC Viewer Listener →
filed underRemote AccessNetwork ServicesFile Transfer

Which one is on your host

ask the machine, not the registry

The registry says what 5500 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.

linux
ss -ltnp | grep ':5500\b'
macos
lsof -nP -iTCP:5500 -sTCP:LISTEN
windows
netstat -ano | findstr :5500

On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.

A port number is not a service. Anything may listen on 5500 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.

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