I've hosted several servers among two different Virtual Private Servers, located in different datacenters, for several months now. For the first month, maybe two, they ran perfectly, appeared on the master list and so forth, but more recently they haven't been showing up on the master list at all, all 6 of them. I'm thinking the master list has banned my servers IP addresses for some reason, although I cannot fathom why. Supporting me thinking that is the following: When are user (first IP) or say a tracking list like Gametracker (bottom IP) requests server information it typically sends a 14 byte packet asking for it, and my server promply responds with a 790-800 byte serverinfo packet. As seen below. 13:17:16.828061 IP fwddns-node1.datx01.hostnoc.net.domain > 340577.ud.no-ip.org.35877: 38259 1/2/2 PTR ppp78-37-245-62.pppoe.avangarddsl.ru. (171)13:17:29.975528 IP scanner2.gametracker.com.42664 > 340577.ud.no-ip.org.29070: UDP, length 1413:17:29.975657 IP 340577.ud.no-ip.org.53139 > fwddns-node1.datx01.hostnoc.net.domain: 36644+ PTR? 148.78.61.108.in-addr.arpa. (44)13:17:29.975857 IP 340577.ud.no-ip.org.29070 > scanner2.gametracker.com.42664: UDP, length 79713:17:29.976246 IP fwddns-node1.datx01.hostnoc.net.domain > 340577.ud.no-ip.org.53139: 36644 1/2/2 PTR scanner2.gametracker.com. (157)13:17:30.086603 IP scanner3.gametracker.com.38822 > 340577.ud.no-ip.org.29080: UDP, length 1413:17:30.086859 IP 340577.ud.no-ip.org.29080 > scanner3.gametracker.com.38822: UDP, length 800 When my server sends a heartbeat to masterjk3.ravensoft.com, as seen below 12:46:56.201415 IP 340577.ud.no-ip.org.49032 > fwddns-node1.datx01.hostnoc.net.domain: 48784+ A? masterjk3.ravensoft.com. (41) 12:46:56.201862 IP fwddns-node1.datx01.hostnoc.net.domain > 340577.ud.no-ip.org.49032: 48784 2/7/7 CNAME avhccpsx07.ravensoft.com., A 63.146.124.53 (332) 12:46:56.202007 IP 340577.ud.no-ip.org.29070 > 63.146.124.53.29060: UDP, length 27 The server console output seems normal: Resolving clanservers.netclanservers.net resolved to 208.167.241.123:29060Sending heartbeat to clanservers.netResolving 212.6.108.246:1111212.6.108.246:1111 resolved to 212.6.108.246:29060Sending heartbeat to 212.6.108.246:1111Resolving 63.146.124.5363.146.124.53 resolved to 63.146.124.53:29060Sending heartbeat to 63.146.124.53Sending heartbeat to clanservers.netSending heartbeat to 212.6.108.246:1111Sending heartbeat to 63.146.124.53Sending heartbeat to clanservers.netSending heartbeat to 212.6.108.246:1111Sending heartbeat to 63.146.124.53 masterjk3.ravensoft.com never sends a getstatus request, and my server never replies with the 800 byte serverinfo packet. This is clearly why it doesn't appear on the master list, but the reason the master server isnt responding to my heartbeats is confusing, to say the least. Does anyone have any insight I don't in to this problem?