I was setting up geo-filtering for a good portion of the world that I don’t expect any traffic from, and appear to have accidentally blocked 1. Does anyone know what country this is being hosted out of so that I can ensure I don’t block it? I was able to resolve the issue by removing the majority of the filters but that is not a great solution for me.
I used geo-filtering on my ubiquiti UDM to block most of the eastern hemisphere and South America. This resulted in the inability to use the 18.104.22.168 dns resolver, and some IoT devices were unable to resolve their callback servers that depend on 22.214.171.124. I was able to further confirm my suspicion by the inability to ping 126.96.36.199, 188.8.131.52, and 184.108.40.206.
Using this map, I selected countries to geo-block (i.e. Russia is currently blocked). When I blocked most of the eastern hemisphere and South America, I could no longer access Cloudflare’s DNS network. When I removed the majority of the blocks to just what is in the photo, it started working again. Therefore, the 1 dot DNS network must be hosted in one of those countries. What I am asking is, is anyone aware of the country/countries that 1 dot is hosted out of?
I am afraid it still is not clear what you blocked. If you can’t resolve against Cloudflare you obviously need to make sure that 220.127.116.11 is reachable. If it is the issue I mentioned in my earlier posting you need to follow the given advice.
At this point it seems it is the former issue, which would mean you need to make sure the mentioned addresses are not blocked on your site.