Use dns to query server CDN status

Use nsloop to specify different dns server addresses to obtain different CDN addresses

 

Dns 202.101.172.47 is the dns address of Zhejiang
The obtained sina address is 61.172.201.194/195 (Shanghai Telecom ).
Ping 202.101.172.47 returns a latency of about 2 ms.

Dns 8.8.8.8 is the US dns address.
The obtained sina address is 12.130.132.30 (USA)
Ping 8.8.8.8 returns a latency of about 35 ms.
 

Dns 202.102.154.3 is the dns address of Shandong Province.
The obtained sina address is 60.215.128.13 * (Laiwu City Unicom, Shandong Province)
 

 

This article is from the blog "you just want to boast"