master3.teeworlds.com uses firewall rules to block running DDoS attacks. You may get less servers than are currently online. In such cases, please reload the server list several times until all servers are displayed.
Some master servers currently use active firewall rules to react against incoming DDoS attacks. These rules force our crawlers to behave in a certain way to get correct statistics. We are currently working on a solution to support all master servers again. We apologize for any inconvenience.