211.66.248.0/21

ip:	211.66.248.0 
loc:	China, Guangzhou (Guangdong)  
isp:	AS4538 China Education and Research Network Center » PUICHING »  2273.058 ms
route:	211.66.248.0/21, CERNET-CN - China Education and Research Network, CN (Guangzhou (Chinizhen)) ... 
reg:	211.64.0.0/14, CN, APNIC, 1999-09-17
asn:	AS4538 - ERX-CERNET-BKB China Education and Research Network Center, CN
	  AS4837  - CHINA169-Backbone CHINA UNICOM China169 Backbone, CN
	  AS23764 - CTGNet CTGNet, HK
addr:	  Network Research Center Main Bldg Tsinghua Univ Beijing 100084 China
online:	  3 » latency: 369 ms (369ms) 

see also:
   211.64.0.0/13    AS4538   APNIC-AP Asia Pacific Network Information Centre, AU
   211.66.0.0/16    AS4538   CERNET-CN China Education and Research Network, CN
   211.66.0.0/16    AS24357  CERNET-CN China Education and Research Network, CN