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TCP 4000

ProtocolTCP
Port4000
LabelsDiablo II game

Synopsis

  • Diablo II (Blizzard) uses TCP port 4000 for Battle.net gameplay and for hosting/joining games.
  • Many MUD servers (e.g., DikuMUD/ROM and CircleMUD) traditionally listen on TCP 4000 for player connections.
  • ICQ (legacy Mirabilis client) historically used TCP 4000 for client–server messaging and presence.
  • Jekyll’s built-in web server defaults to TCP 4000 for local site previews (http://localhost:4000).
  • The Phoenix (Elixir) web framework’s development server defaults to TCP 4000 (mix phx.server) for local apps.

Observed activity

Last 30 days Detailed chart

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