ntech
September 15, 2022, 7:42pm
1
We have a local bank which is at bellco dot org. It doesn’t resolve on 1.1.1.1, but resolves on others. Searching other issues indicated it might be a DNSSEC misconfiguration. However, I check it at verisignlabs dnssec-analyzer and there seem to be no problems.
Any thoughts on why it does not show up in Cloudflared DNS, and what I could tell the company to fix?
fritex
September 15, 2022, 8:19pm
2
Works on my end using 1.1.1.1 DNS
DNSSEC is enabled and fine so far.
ntech
September 15, 2022, 8:28pm
3
Interesting. When I do it from the command line, it doesn’t work:
ntech@server:~$ nslookup bellco.org 1.1.1.1
Server: 1.1.1.1
Address: 1.1.1.1#53
** server can't find bellco.org: SERVFAIL
ntech@server:~$ nslookup bellco.org 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: bellco.org
Address: 23.185.0.3
Name: bellco.org
Address: 2620:12a:8000::3
Name: bellco.org
Address: 2620:12a:8001::3
fritex
September 15, 2022, 8:31pm
4
I wonder if the local ISP is maybe blocking something, or if there’s something on the network
From my end:
$ nslookup bellco.org 1.1.1.1
Server: 1.1.1.1
Address: 1.1.1.1#53
Non-authoritative answer:
Name: bellco.org
Address: 23.185.0.3
Name: bellco.org
Address: 2620:12a:8000::3
Name: bellco.org
Address: 2620:12a:8001::3
dig
trace is also ok.
Or wait a bit, maybe not so
Testing online, Cloudflare failed to respond?
1 Like
ntech
September 15, 2022, 8:34pm
5
Yes, I’m getting the same failure with dig on 1.1.1.1, but working on 8.8.8.8:
ntech@server:~$ dig @1.1.1.1 bellco.org
; <<>> DiG 9.18.1-1ubuntu1.1-Ubuntu <<>> @1.1.1.1 bellco.org
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 29888
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; EDE: 9 (DNSKEY Missing): (no SEP matching the DS found for open-techs.com.)
;; QUESTION SECTION:
;bellco.org. IN A
;; Query time: 2215 msec
;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)
;; WHEN: Thu Sep 15 14:33:20 MDT 2022
;; MSG SIZE rcvd: 93
ntech@server:~$ dig @8.8.8.8 bellco.org
; <<>> DiG 9.18.1-1ubuntu1.1-Ubuntu <<>> @8.8.8.8 bellco.org
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11429
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;bellco.org. IN A
;; ANSWER SECTION:
bellco.org. 454 IN A 23.185.0.3
;; Query time: 19 msec
;; SERVER: 8.8.8.8#53(8.8.8.8) (UDP)
;; WHEN: Thu Sep 15 14:33:37 MDT 2022
;; MSG SIZE rcvd: 55
ntech
September 15, 2022, 9:14pm
6
Thanks for the site, I’m seeing those results that Cloudflare isn’t returning anything for this domain:
Lumito
September 15, 2022, 9:22pm
7
Works also fine for me:
dig @1.1.1.1 bellco.org
; <<>> DiG 9.16.27 <<>> @1.1.1.1 bellco.org
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42371
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;bellco.org. IN A
;; ANSWER SECTION:
bellco.org. 896 IN A 23.185.0.3
;; Query time: 28 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Thu Sep 15 23:20:33 CEST 2022
;; MSG SIZE rcvd: 55
Have you tried restarting your computer? If it still doesn’t work, would you mind changing your DNS servers to 162.159.36.1
and 162.159.46.1
, and try again?
Hope it helps!
ntech
September 15, 2022, 9:34pm
8
Thanks, I tried, and it seems to be complaining about a missing DNSKEY on the domain:
ntech@server:~$ dig @162.159.36.1 bellco.org
; <<>> DiG 9.18.1-1ubuntu1.1-Ubuntu <<>> @162.159.36.1 bellco.org
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 54584
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; EDE: 9 (DNSKEY Missing): (no SEP matching the DS found for open-techs.com.)
;; QUESTION SECTION:
;bellco.org. IN A
;; Query time: 1795 msec
;; SERVER: 162.159.36.1#53(162.159.36.1) (UDP)
;; WHEN: Thu Sep 15 15:28:38 MDT 2022
;; MSG SIZE rcvd: 93
But then not everyone is getting it
Lumito
September 15, 2022, 9:38pm
9
I’ve run a test on a different website, and it showed some warnings and errors complaining, mainly, about DNSSEC.
https://dnsviz.net/d/bellco.org/dnssec/
Hope it helps!
2 Likes
fritex
September 15, 2022, 9:46pm
10
Lumito:
warnings and errors
Old algorithm 7 being used, which …
Ye, a bit weird
1 Like
ntech
September 15, 2022, 9:48pm
11
Thanks @fritex and @Lumito ! I’ve taken the information you’ve found and sent it to the bank. Hopefully their web team can address it.
1 Like
system
Closed
October 15, 2022, 9:49pm
12
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