Re: Level3 4.2.2.1 and 4.2.2.2 not responding to pings, DNS queries work

[Daniel Sterling <sterling.daniel () gmail com>]

Seems like these IPs not responding to ping is not unusual, as per
https://www.reddit.com/r/sysadmin/comments/11syv2e/google_dns_8888_dropping_pings_like_crazy_today/

"Google has stated multiple times before as has Level3/CenturyLink/Lumen
that 4.2.2.1 and 8.8.8.8 should not be used for ping checks and they will
drop packets when under load or if they notice too much activity from a
single IP"

-- Dan

On Sun, Jan 12, 2025 at 11:03 PM Mel Beckman <mel () beckman org> wrote:

> Still not pinging from Frontier, Lumen, AT&T, or Verizon networks
>
>
>  -mel
>
> On Jan 12, 2025, at 4:13 PM, Jerry Cloe <jerry () jtcloe net> wrote:
>
> 
> O:\>ping 4.2.2.1
>
> Pinging 4.2.2.1 with 32 bytes of data:
> Reply from 4.2.2.1: bytes=32 time=36ms TTL=56
> Reply from 4.2.2.1: bytes=32 time=44ms TTL=56
> Reply from 4.2.2.1: bytes=32 time=36ms TTL=56
> Reply from 4.2.2.1: bytes=32 time=38ms TTL=56
>
> Ping statistics for 4.2.2.1:
>     Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
> Approximate round trip times in milli-seconds:
>     Minimum = 36ms, Maximum = 44ms, Average = 38ms
>
> Same for 4.2.2.2
>
>
>
>
> -----Original message-----
> *From:* Mel Beckman <mel () beckman org>
> *Sent:* Sun 01-12-2025 06:07 pm
> *Subject:* Level3 4.2.2.1 and 4.2.2.2 not responding to pings, DNS
> queries work
> *To:* nanog () nanog org;
> I noticed that Level3 open DNS 4.2.2.1 and 4.2.2.2 stopped responding to
> ping today. They are responding to DNS queries however.
>
> Does anyone know if this filtering is going to be permanent?
>
> -mel beckman