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Port 20562 services

2 entries are registered on port 2056. 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
udp · tcp

2 transports 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
:2056Civilization 4 Multiplayercaution
:2056OmniSky Portsafe

01Civilization 4 Multiplayerudp · unofficial · risk 4/10

Port 2056 is primarily used by Civilization 4 for its multiplayer functionality, enabling players to connect and compete over local or Internet networks. By using this port, the game handles in-game data exchanges including player moves, game state synchronization, chat, and other multiplayer-specific communications. As an unofficial port, it may require manual configuration to ensure smooth and secure gameplay experiences.

port 2056 as Civilization 4 Multiplayer →
filed underGaming

Which one is on your host

ask the machine, not the registry

The registry says what 2056 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 ':2056\b'
macos
lsof -nP -iTCP:2056 -sTCP:LISTEN
windows
netstat -ano | findstr :2056

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 2056 — 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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