I am getting issues with using a custom DNS resolver on my Magio Optic internet. Sometimes during the day for a short period of time ranging from a few seconds to a few minutes I cannot resolve any domain names via Cloudflare's 188.8.131.52 DNS as the DNS request times out. The issue also occurs when using OpenDNS and a VPN service's DNS servers, so the issue is not with 184.108.40.206's servers, but interestingly enough Google's 220.127.116.11 DNS works fine. I've tested on multiple devices and this is a network wide problem. 'nslookup telekom.sk' during an "outage": C:\Users\acer>nslookup telekom.sk DNS request timed out. timeout was 2 seconds. Server: UnKnown Address: 18.104.22.168 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** Request to UnKnown timed-out Pinging 22.214.171.124 or OpenDNS works, as well as opening the 126.96.36.199 site in my web browser or any other IP address that has a website hosted on it. Here is a traceroute to 188.8.131.52: C:\Users\acer>tracert 184.108.40.206 Tracing route to 220.127.116.11 over a maximum of 30 hops 1 <1 ms <1 ms <1 ms 192.168.1.1 2 * * * Request timed out. 3 4 ms 4 ms 4 ms 18.104.22.168 4 * * * Request timed out. 5 12 ms 14 ms 10 ms 22.214.171.124 6 24 ms 24 ms 25 ms 126.96.36.199 7 10 ms 10 ms 10 ms 188.8.131.52 8 11 ms 11 ms 10 ms 184.108.40.206 9 10 ms 10 ms 10 ms 220.127.116.11 The traceroute looks the same during an "outage" and when everything is working correctly. This started happening sometime last year, before that I was using 18.104.22.168 and it worked well. I want to keep using 22.214.171.124. Any help would be appreciated.