I had stun server problems today. The Server Event Log simply said: STUN server 220.127.116.11:3478 could not be reached (time out three times) every 20 minutes. But when I checked the Server Activity Log it listed three servers that timed out, 18.104.22.168, 22.214.171.124, 126.96.36.199. Those seem to be in PA, Italy, and FL, respectively. I have my system to use stun servers stun.3cx.com, stun2.3cx.com and stun3.3cx.com. Somehow I don't think these are in Pennsylvania, Italy and Florida. Or am I wrong? I've blocked some of these ip ranges in the past for hacking attempts but I've been having no problems with my remote extensions until today. I simply gave up trying to fix my remote issues (could not call out.. got "Forbidden" message, but could answer calls) and it finally resolved itself sometime in the afternoon. These stun servers seem to be a mystery to me. Any insights from any Stun Wizards out there?