My static ips are inaccessible only from CenturyLink users across all ports

Solution 1:

This is an issue within CenturyLink network. You need to talk to them about the issue and get it resolved.

Solution 2:

It's most likely your netmask is incorrect. The netmask determines which IP addresses are considered to be on the same layer 2 network segment, and if it is incorrect, you will lose connectivity to addresses within that mask, as your device will think they are on the local layer 2 network segment, and will not attempt to route those packets anywhere.