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https://bilibili.co.jp

CNAME+NS+SOA かつNS+SOA返答など。

== whois ==
{{{
a. [Domain Name]                BILIBILI.CO.JP
g. [Organization]               BILIBILI,CO,LTD.
l. [Organization Type]          corporation
m. [Administrative Contact]     YM25932JP
n. [Technical Contact]          TW188401JP
p. [Name Server]                ns3.dnsv3.com
p. [Name Server]                ns4.dnsv3.com
s. [Signing Key]                
[State]                         Connected (2022/12/31)
[Registered Date]               2014/12/11
[Connected Date]                2014/12/11
[Last Update]                   2022/01/01 01:13:21 (JST)

}}}

== history ==
おかしな返答の権威サーバー

{{{
bilibili.co.jp.		86400	IN	NS	ns3.dnsv3.com.
bilibili.co.jp.		86400	IN	NS	ns4.dnsv3.com.
}}}

{{{
$ dig -t a bilibili.co.jp @ns4.dnsv3.com

; <<>> DiG 9.11.3-1ubuntu1.17-Ubuntu <<>> -t a bilibili.co.jp @ns4.dnsv3.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44890
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;bilibili.co.jp.			IN	A

;; ANSWER SECTION:
bilibili.co.jp.		600	IN	CNAME	bilibili.co.jp.w.cdngslb.com.

;; AUTHORITY SECTION:
bilibili.co.jp.		86400	IN	NS	ns3.dnsv3.com.
bilibili.co.jp.		86400	IN	NS	ns4.dnsv3.com.

;; Query time: 67 msec
;; SERVER: 61.151.180.48#53(61.151.180.48)
;; WHEN: Fri Apr 08 23:18:39 JST 2022
;; MSG SIZE  rcvd: 139

}}}
$ dig -t ns bilibili.co.jp
{{{
; <<>> DiG 9.11.3-1ubuntu1.17-Ubuntu <<>> -t ns bilibili.co.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60471
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;bilibili.co.jp.			IN	NS

;; ANSWER SECTION:
bilibili.co.jp.		462	IN	CNAME	bilibili.co.jp.w.cdngslb.com.

;; AUTHORITY SECTION:
w.cdngslb.com.		273	IN	SOA	ns1.vip.cdngslb.com. root.cdngslb.com. 181010 3600 3600 360000 300

;; Query time: 157 msec
;; SERVER: 210.188.224.10#53(210.188.224.10)
;; WHEN: Fri Apr 08 23:17:13 JST 2022
;; MSG SIZE  rcvd: 134

}}}
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