当然是 TANET 封的.
现在
bilibili.com dns 是代管 dnsv5.com
基本上就是跟 aws route 53 做的功能差不多.
从台湾查.
; <<>> DiG 9.20.11 <<>> www.bilibili.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14645
;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: 248005d1530b9c7c0100000068f10f8a3b38a886240d10bb (good)
;; QUESTION SECTION:
;www.bilibili.com. IN A
;; ANSWER SECTION:
www.bilibili.com. 300 IN CNAME a.w.bilicdn1.com.
a.w.bilicdn1.com. 300 IN CNAME i.w.bilicdn1.com.
i.w.bilicdn1.com. 90 IN A 103.151.151.133
i.w.bilicdn1.com. 90 IN A 103.151.151.6
i.w.bilicdn1.com. 90 IN A 103.151.151.4
i.w.bilicdn1.com. 90 IN A 103.151.151.134
i.w.bilicdn1.com. 90 IN A 103.151.151.5
; <<>> DiG 9.20.11 <<>> bilibili.com ns
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42349
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 25
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; COOKIE: b8ee9c8cef0abb420100000068f10fb0d49b914dc36b3672 (good)
;; QUESTION SECTION:
;bilibili.com. IN NS
;; ANSWER SECTION:
bilibili.com. 47251 IN NS ns3.dnsv5.com.
bilibili.com. 47251 IN NS ns4.dnsv5.com.
;; ADDITIONAL SECTION:
ns3.dnsv5.com. 147606 IN A 1.12.0.17
ns3.dnsv5.com. 147606 IN A 1.12.0.18
ns3.dnsv5.com. 147606 IN A 1.12.14.17
ns3.dnsv5.com. 147606 IN A 1.12.14.18
ns3.dnsv5.com. 147606 IN A 13.210.151.70
ns3.dnsv5.com. 147606 IN A 15.184.235.10
ns3.dnsv5.com. 147606 IN A 43.129.144.52
ns3.dnsv5.com. 147606 IN A 43.161.3.52
ns3.dnsv5.com. 147606 IN A 52.220.136.67
ns3.dnsv5.com. 147606 IN A 101.227.168.52
ns3.dnsv5.com. 147606 IN A 163.177.5.52
ns4.dnsv5.com. 147606 IN A 1.12.0.16
ns4.dnsv5.com. 147606 IN A 1.12.0.19
ns4.dnsv5.com. 147606 IN A 1.12.14.16
ns4.dnsv5.com. 147606 IN A 1.12.14.19
ns4.dnsv5.com. 147606 IN A 35.154.34.246
ns4.dnsv5.com. 147606 IN A 43.134.249.52
ns4.dnsv5.com. 147606 IN A 52.198.159.146
ns4.dnsv5.com. 147606 IN A 108.136.87.44
ns4.dnsv5.com. 147606 IN A 112.80.181.106
ns4.dnsv5.com. 147606 IN A 124.64.205.152
ns4.dnsv5.com. 147606 IN A 150.109.248.236
ns3.dnsv5.com. 118765 IN AAAA 2402:4e00:1470:2::f
ns4.dnsv5.com. 118765 IN AAAA 2402:4e00:111:fff::8
说实在的,要挂很难
而 www.bilibili.com 解出来的是 CNAME a.w.bilicdn1.com
而 a.w.bilicdn1.com 又 CNAME 到 i.w.bilicdn1.com
解出来的A 纪录是 103.151.150.0/23
是 bilibili.com 自已的IP 做CDN.
inetnum: 103.151.150.0 - 103.151.151.255
netname: BILIBILIHKLIMITED-HK
descr: BILIBILI HK LIMITED
country: CN
org: ORG-BHL3-AP
admin-c: BHLA3-AP
tech-c: BHLA3-AP
abuse-c: AB937-AP
status: ASSIGNED PORTABLE
remarks: Used for multihoming
remarks: