DNS blocked no matter the server?

[sbsnb]

I have this weird issue where I cannot resolve sce.com no matter what servers I use.

> sce.com
Server:  dns9.quad9.net
Address:  9.9.9.9

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to dns9.quad9.net timed-out

> sce.com
Server:  dns.google
Address:  8.8.8.8

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to dns.google timed-out

It's not an issue reaching the servers since they work for any other domain.

> snbforums.com
Server:  dns9.quad9.net
Address:  9.9.9.9

Non-authoritative answer:
Name:    snbforums.com
Addresses:  2606:4700:20::ac43:4551
          2606:4700:20::681a:942
          2606:4700:20::681a:842
          104.26.8.66
          104.26.9.66
          172.67.69.81

> snbforums.com
Server:  dns.google
Address:  8.8.8.8

Non-authoritative answer:
Name:    snbforums.com
Addresses:  2606:4700:20::681a:842
          2606:4700:20::681a:942
          2606:4700:20::ac43:4551
          104.26.9.66
          172.67.69.81
          104.26.8.66

It's been this way for days. The strangest thing is that when I check the status of sce.com from other Web sites it appears to be up and running with no trouble. When I traceroute to sce.com's IP space it looks fine.

Any ideas what the heck?

 

[sbsnb]

What's even more strange is that if I try to ping sce.com from the router UI it has no problem resolving.

PING sce.com (45.60.136.211): 56 data bytes
64 bytes from 45.60.136.211: seq=0 ttl=57 time=76.306 ms
64 bytes from 45.60.136.211: seq=1 ttl=57 time=76.223 ms
64 bytes from 45.60.136.211: seq=2 ttl=57 time=76.438 ms
64 bytes from 45.60.136.211: seq=3 ttl=57 time=76.377 ms
64 bytes from 45.60.136.211: seq=4 ttl=57 time=76.433 ms

--- sce.com ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 76.223/76.355/76.438 ms

 

[sbsnb]

From the router:

admin@RT-AX86U-AE24:/tmp/home/root# nslookup sce.com
Server:    208.67.220.220
Address 1: 208.67.220.220 dns.opendns.com

Name:      sce.com
Address 1: 45.60.136.211
Address 2: 45.60.77.211

From a LAN client:

> sce.com
Server:  resolver2.opendns.com
Address:  208.67.220.220

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to resolver2.opendns.com timed-out

 

[sbsnb]

Figured it out. It was a layered issue involving DNS filtering.

 

[sfx2000]

parental controls?

There was a post recently about nxdomain timeouts...

In any case, works fine here... with Cloudflare DNS over TLS...

dig sce.com

; <<>> DiG 9.10.6 <<>> sce.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39034
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;sce.com.			IN	A

;; ANSWER SECTION:
sce.com.		900	IN	A	45.60.136.211
sce.com.		900	IN	A	45.60.77.211

;; Query time: 61 msec
;; SERVER: 2606:4700:4700::1111#53(2606:4700:4700::1111)
;; WHEN: Sat Sep 03 17:17:46 PDT 2022
;; MSG SIZE  rcvd: 68