whatportis.com

Port 270102 services

2 entries are registered on port 27010. 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

1 transport in use

in transit
0/2

entries encrypted on the wire

worst risk
4/10

1 of 2 iana-registered

Services on this port

ranked by lookups
portservicerisk
:27010Source Engine Servercaution
:27010Flexera License Service Administrationsafe

01Source Engine Serverno transport recorded · unofficial · risk 4/10

Port 27010 is commonly associated with dedicated game servers running on the Source Engine, developed by Valve. This port is utilized for server communication, such as game status queries and managing multiple server instances within multiplayer online gaming environments. While it is primarily known in unofficial contexts, it remains a critical component supporting the gameplay and server management of titles like Counter-Strike, Team Fortress, and other Source-based games.

port 27010 as Source Engine Server →
filed underGamingNetwork Services

Which one is on your host

ask the machine, not the registry

The registry says what 27010 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 ':27010\b'
macos
lsof -nP -iTCP:27010 -sTCP:LISTEN
windows
netstat -ano | findstr :27010

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 27010 — 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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