阿里公共 DNS 的后端是不是有问题

DNS 参考资料

› dnslib for Python

This topic created in 460 days ago, the information mentioned may be changed or developed.

最近用 adguard home 解析域名发现一半的时间会解析到国外的 CDN 节点上面，比如 jd 抖音的域名。
于是在远程 vps 上面测试了下。发现阿里公共 dns 有时候传递了 esc ，有时候又没有。导致一会儿是国内 CDN 节点，一会是国外 CDN 节点。
也找不到地方反馈一下，哎

[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21080
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT

;; ANSWER SECTION:
o-o.myaddr.l.google.com. 17 IN TXT "47.254.235.11"

;; Query time: 172 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:40 CST 2025
;; MSG SIZE rcvd: 89

[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51080
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1408
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT

;; ANSWER SECTION:
o-o.myaddr.l.google.com. 44 IN TXT "47.254.235.11"
o-o.myaddr.l.google.com. 44 IN TXT "edns0-client-subnet 27.8.0.0/25"

;; Query time: 171 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:41 CST 2025
;; MSG SIZE rcvd: 133

DNS

解析

CDN

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