CERNET IP地址
bj-ngw-rn2>sh ip bgp regexp _4538_
*> 162.105.0.0 202.112.63.100 0 4538 i
*> 166.111.0.0 202.112.63.100 0 4538 i
*> 202.4.128.0/19 202.112.63.100 0 4538 i
*> 202.38.64.0/19 202.112.63.100 0 4538 i
*> 202.38.96.0/19 202.112.63.100 0 4538 i
*> 202.38.192.0/18 202.112.63.100 0 4538 i
*> 202.112.0.0/13 202.112.63.100 0 4538 i
*> 202.120.0.0/15 202.112.63.100 0 4538 i
*> 202.192.0.0/12 202.112.63.100 0 4538 i
*> 210.25.0.0/16 202.112.63.100 0 4538 i
*> 210.26.0.0/15 202.112.63.100 0 4538 i
*> 210.28.0.0/14 202.112.63.100 0 4538 i
*> 210.32.0.0/12 202.112.63.100 0 4538 i
*> 211.64.0.0/14 202.112.63.100 0 4538 i
*> 211.68.0.0/15 202.112.63.100 0 4538 I
相当于 57个B类地址 15个SUPER BLOCK