On ATT fiber residential in Chesterfield (St Louis) MO, I can ping the main family filter DNS server IPv4 but I am not able to ping or use the secondary server IPv4. Is this an ATT routing issue or a cleanbrowsing.org problem?
$ ping 184.108.40.206
PING 220.127.116.11 (18.104.22.168): 56 data bytes
64 bytes from 22.214.171.124: icmp_seq=0 ttl=52 time=128.812 ms
My apologies! I was debugging a long working configuration that stopped working unexpectedly this morning and evidently just had a bad day translating the numbers to the command line from my stubby configuration file after performing many other tests to isolate the issue.