What we ask the server
DayZ answers Steam's A2S query over UDP on its Steam query port, set by steamQueryPort in serverDZ.cfg (commonly 27016). Players join on the game port, 2302 by default.
DayZ server status checker
Check whether a DayZ server answers the Steam query the launcher uses, with players, map and response time.
Checked from our server on the public internet. We don't store the addresses you check or any player names. Private and local addresses are refused.
How the DayZ check works
What you see
Online or not, players and maximum, the map (for example chernarusplus) and the round-trip time.
Enter either port
Type the game address; we try the usual query port. If you set a custom steamQueryPort, enter it in the port field.
DayZ server showing offline? Check these
steamQueryPortisn't set or isn't open. Open it for UDP in every firewall between the server and the internet.- The server is still loading the mission or the economy files after a restart.
- Several servers on one machine share a query port by mistake. Give each its own.
More on query ports and what a status check can and can't tell you in the basic mode guide, and everything ServerStats tracks on DayZ servers.
Questions
What is the DayZ query port?
Whatever steamQueryPort is set to in serverDZ.cfg, commonly 27016. The game port (2302 by default) is separate.
Why is my DayZ server not in the launcher list?
Usually the Steam query port is closed or not set, or the server hasn't finished loading after a restart.
Can I monitor my DayZ server around the clock?
Yes. ServerStats basic mode queries it continuously, keeps the player history and alerts you when it stops answering. DayZ also has a full ServerStats agent for deeper data.
Watch it around the clock, free
Basic mode runs this check continuously for one server, keeps the history and alerts you in Discord when it goes down.