It’s being filtered. Only Charter can tell you why. -- Mark Andrews
> On 26 Oct 2023, at 05:07, Jason J. Gullickson via NANOG <nanog@nanog.org> > wrote: > > > I've been working for a week or so to solve a problem with DNS resolution for > Charter customers for our domain bonesinjars.com. I've reached-out to > Charter directly but since I'm not a customer I couldn't get any help from > them. I was directed by a friend to this list in hopes that there may be > able to reach a Charter/Spectrum engineer who might be able to explain and/or > resolve this one. > > A dig against Google's DNS servers correctly returns 4 A records: > > > dig bonesinjars.com 8.8.8.8 > > ; <<>> DiG 9.18.12-0ubuntu0.22.04.3-Ubuntu <<>> bonesinjars.com 8.8.8.8 > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31383 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 65494 > ;; QUESTION SECTION: > ;bonesinjars.com. IN A > > ;; ANSWER SECTION: > bonesinjars.com. 60 IN A 198.49.23.145 > bonesinjars.com. 60 IN A 198.185.159.145 > bonesinjars.com. 60 IN A 198.49.23.144 > bonesinjars.com. 60 IN A 198.185.159.144 > > ;; Query time: 1039 msec > ;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP) > ;; WHEN: Mon Oct 23 10:26:32 CDT 2023 > ;; MSG SIZE rcvd: 108 > > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 26879 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 65494 > ;; QUESTION SECTION: > ;8.8.8.8. IN A > > ;; Query time: 35 msec > ;; SERVER: 127.0.0.53#53(127.0.0.53) (UDP) > ;; WHEN: Mon Oct 23 10:26:32 CDT 2023 > ;; MSG SIZE rcvd: 36 > > > > Verizon, AT&T, Comcast and all other DNS servers we tested return the same 4 > A records. However the same dig against a Charter DNS (24.196.64.53) returns > only 127.0.0.54: > > > > dig bonesinjars.com 24.196.64.53 > > ; <<>> DiG 9.16.1-Ubuntu <<>> bonesinjars.com 24.196.64.53 > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17691 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 65494 > ;; QUESTION SECTION: > ;bonesinjars.com. IN A > > ;; ANSWER SECTION: > bonesinjars.com. 60 IN A 127.0.0.54 > > ;; Query time: 55 msec > ;; SERVER: 127.0.0.53#53(127.0.0.53) > ;; WHEN: Tue Oct 24 13:28:36 CDT 2023 > ;; MSG SIZE rcvd: 60 > > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4658 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 65494 > ;; QUESTION SECTION: > ;24.196.64.53. IN A > > ;; ANSWER SECTION: > 24.196.64.53. 86400 IN A 24.196.64.53 > > ;; Query time: 27 msec > ;; SERVER: 127.0.0.53#53(127.0.0.53) > ;; WHEN: Tue Oct 24 13:28:36 CDT 2023 > ;; MSG SIZE rcvd: 57 > > > > Any help understanding and addressing this is greatly appreciated! > > > > Jason