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[public-dns-discuss] Got private IP address when resolve "home.sina.com" from China



Google public DNS returns 10.10.10.10, when I try to resolve "home.sina.com" from China.
https://dns.google.com/query?name=home.sina.com&type=A&dnssec=true&ecs=114.114.114.114

But OpenDNS works well with this domain.

dig home.sina.com. @208.67.222.222


; <<>> DiG 9.10.6 <<>> home.sina.com. @208.67.222.222

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3980

;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1


;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 4096

;; QUESTION SECTION:

;home.sina.com. IN A


;; ANSWER SECTION:

home.sina.com. 60 IN CNAME us.sina.cn.

us.sina.cn. 60 IN CNAME us.sina.com.

us.sina.com. 60 IN A 66.102.251.24


;; Query time: 627 msec

;; SERVER: 208.67.222.222#53(208.67.222.222)

;; WHEN: Tue Jun 18 12:43:50 CST 2019

;; MSG SIZE  rcvd: 99


Not only "home.sina.com", but also "sina.com.hk", "blog.sina.com.hk", "chinanews.sina.com" and more have this problem.

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