Can't connect to Mangadex.org on my own Netowrk

[Xevichr]

Since about a week, I suddenly can't go to Mangadex.org anymore on my own network. I tried multiple devices, I got my Network Firewall down, I tried different DNS servers and still can't even ping or tracert Mangedex.org. Anyone have any clue why? Help would be appreciated.

 

[Xevichr]

Update: I turned off GeoIP filtering on Ubiquiti, this means I blocked everything coming from certain countries. Which country are the Mangedex.org servers located? Than I can unblock this country.