[dns-operations] NXDomain response in Brazil network

[Davey Song]

Hi folks,

Anyone here has ISP contacts in Brazil like Vivo or Claro? An important
domain *.aliyuncs.com receiving NXDomain response in the Brazil network.

WHEN I DIG @177.159.101.225 (AS18881 TELEFÔNICA BRASIL S.A)  :


root at localhost:~# dig @177.159.101.225 aliyuncs.com

<>> DiG 9.18.30-0ubuntu0.24.04.1-Ubuntu <>> @177.159.101.225 aliyuncs.com

; (1 server found)

i; global options: +cmd ;; Got answer:

;; →>HEADER<<- opcode: QUERY, status: NDOMAIN, id: 54887

i; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 512

;; QUESTION SECTION:

;aliyuncs.com.

IN

;; Query time: 39 msec

;; SERVER: 177.159.101.225#53(177.159.101.225) (UDP)

;; WHEN: Tue Feb 11 13:23:26 UTC 2025

;; MSG SIZE rcvd: 41



No error found when I dig + trace. It seems resolvers in Brazil block this
name.


-Davey
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