Not sure if related, but since +/- yesterday, Quad9 is giving me nxdomain on level1techs.us-east-1.linodeobjects.com effectively blocking most images, unless I open them in a new tab and retry a few times (in which case router falls back to ISP DNS):
$ dig @9.9.9.9 level1techs.us-east-1.linodeobjects.com
; <<>> DiG 9.18.18-0ubuntu0.22.04.2-Ubuntu <<>> @9.9.9.9 level1techs.us-east-1.linodeobjects.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 35162
;; flags: qr rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;level1techs.us-east-1.linodeobjects.com. IN A
;; Query time: 9 msec
;; SERVER: 9.9.9.9#53(9.9.9.9) (UDP)
;; WHEN: Mon Feb 10 09:30:45 CET 2025
;; MSG SIZE rcvd: 68
$ dig @8.8.8.8 level1techs.us-east-1.linodeobjects.com
; <<>> DiG 9.18.18-0ubuntu0.22.04.2-Ubuntu <<>> @8.8.8.8 level1techs.us-east-1.linodeobjects.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44454
;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;level1techs.us-east-1.linodeobjects.com. IN A
;; ANSWER SECTION:
level1techs.us-east-1.linodeobjects.com. 600 IN CNAME us-east-1.linodeobjects.com.
us-east-1.linodeobjects.com. 17 IN CNAME us-east-1.linodeobjects.com.akadns.net.
us-east-1.linodeobjects.com.akadns.net. 60 IN A 96.126.106.143
us-east-1.linodeobjects.com.akadns.net. 60 IN A 45.56.104.115
us-east-1.linodeobjects.com.akadns.net. 60 IN A 173.255.231.96
us-east-1.linodeobjects.com.akadns.net. 60 IN A 45.79.137.127
us-east-1.linodeobjects.com.akadns.net. 60 IN A 45.79.157.59
us-east-1.linodeobjects.com.akadns.net. 60 IN A 97.107.137.245
;; Query time: 50 msec
;; SERVER: 8.8.8.8#53(8.8.8.8) (UDP)
;; WHEN: Mon Feb 10 09:30:58 CET 2025
;; MSG SIZE rcvd: 230
$ dig @1.1.1.1 level1techs.us-east-1.linodeobjects.com
; <<>> DiG 9.18.18-0ubuntu0.22.04.2-Ubuntu <<>> @1.1.1.1 level1techs.us-east-1.linodeobjects.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28404
;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;level1techs.us-east-1.linodeobjects.com. IN A
;; ANSWER SECTION:
level1techs.us-east-1.linodeobjects.com. 600 IN CNAME us-east-1.linodeobjects.com.
us-east-1.linodeobjects.com. 60 IN CNAME us-east-1.linodeobjects.com.akadns.net.
us-east-1.linodeobjects.com.akadns.net. 60 IN A 97.107.137.245
us-east-1.linodeobjects.com.akadns.net. 60 IN A 45.56.104.115
us-east-1.linodeobjects.com.akadns.net. 60 IN A 45.79.157.59
us-east-1.linodeobjects.com.akadns.net. 60 IN A 173.255.231.96
us-east-1.linodeobjects.com.akadns.net. 60 IN A 96.126.106.143
us-east-1.linodeobjects.com.akadns.net. 60 IN A 45.79.137.127
;; Query time: 64 msec
;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)
;; WHEN: Mon Feb 10 09:34:29 CET 2025
;; MSG SIZE rcvd: 230