AT&T Fiber Gigabit in Nashville TN.

    iMac   ~ ping 1.1.1.1
    PING 1.1.1.1 (1.1.1.1): 56 data bytes
    64 bytes from 1.1.1.1: icmp_seq=0 ttl=64 time=0.688 ms
    64 bytes from 1.1.1.1: icmp_seq=1 ttl=64 time=0.814 ms
    64 bytes from 1.1.1.1: icmp_seq=2 ttl=64 time=1.153 ms
    64 bytes from 1.1.1.1: icmp_seq=3 ttl=64 time=0.752 ms
    64 bytes from 1.1.1.1: icmp_seq=4 ttl=64 time=0.755 ms
    64 bytes from 1.1.1.1: icmp_seq=5 ttl=64 time=0.789 ms
    64 bytes from 1.1.1.1: icmp_seq=6 ttl=64 time=0.876 ms
    64 bytes from 1.1.1.1: icmp_seq=7 ttl=64 time=0.869 ms
    64 bytes from 1.1.1.1: icmp_seq=8 ttl=64 time=0.830 ms
    64 bytes from 1.1.1.1: icmp_seq=9 ttl=64 time=1.387 ms
    --- 1.1.1.1 ping statistics ---
    10 packets transmitted, 10 packets received, 0.0% packet loss
    round-trip min/avg/max/stddev = 0.688/0.891/1.387/0.204 ms

Pinging 8.8.8.8 averages 8ms. CloudFlare must have a POP here in Nashville?

That's probably because AT&T is using 1.1.1.1 for something internal and breaking the public internet for it's users: you get a really fast ping on 1.1.1.1, but it's not the 1.1.1.1 you are trying to reach.

Is this just speculation or can anybody confirm?

    traceroute to 1.1.1.1 (1.1.1.1), 64 hops max, 52 byte packets
     1  1dot1dot1dot1.cloudflare-dns.com (1.1.1.1)  1.117 ms  0.710 ms  0.727 ms

Seems AT&T uses 1.1.1.1 inside of their modems. Oops!

Using 1.0.0.1 works.

Given that they're a CDN, I would expect them to. I'm jealous that BNA has AT&T peering but Kansas City has minimal/no peering.

haha, I knew that was you when I read Nashville, nodesocket

You should invest in some better wifi gear, it sounds like!

On a Unifi nano hd, with moderate signal, my latency only goes up 1ms.

Getting ~3.5 ms on wifi to 1.1.1.1, ~2.5ms ethernet

That's impressive. My AT&T wifi router caps bandwidth at 300mb/s (instead of 1gbs on ethernet) and add 10-20 ms to latency. And this is standing next to it and using 5ghz.

Man, wish I could ever get pings this low - the link from my VDSL2 model to the local CenturyLink CO alone is 8-15ms depending on the day.

Sucks that VDSL2 no longer supports fastpath, not that I could use it on an ADSL line due to bonding anyway :/

Out of curiosity, what is your complete Unifi / network setup?

GW/Firewall: USG-XG Switches: 2x US-16-XG, 1x US-48, 2x US-8 APs: 2x Nano HD, 2x AC Pro

I'm on Ethernet and fiber all the way. This may have to do more with how AT&T has constructed their fiber in this region. Where do you live?

https://chrissnell.com/hn/traceroute-1.1.1.1.png

How did you get that beautiful traceroute output?

The GP is using mtr:

https://en.m.wikipedia.org/wiki/MTR_(software)

Austin, TX.