T Mobile Networks are being Blocked

[romans815]

Hello

We are using ConfigServer Security & Firewall - csf v14.01 and it blocks all connections from people on T-Mobile devises; it is not blocking an IP but a network. When i turn off they firewall, people using t-mobile can access our sites, when the firewall is activated again they cannot and I have cleared out all blocked ip addresses

Please advise

[Wabun]

Interesting, but annoying, have you disabled in LFD the blocklist to see if it is any of those list?