121.250.144.0/20

ip:	121.250.144.0 
loc:	China, Nanjing (Jiangsu)  
isp:	AS141005 Shandong Provincial Department of Education, » CERNET »  971.264 ms
route:	121.250.144.0/20, NJR-CERNET - China Education and Research Network, CN (Nanjing) ... 
reg:	121.248.0.0/14, CN, APNIC, 2006-09-18
asn:	AS4538 - ERX-CERNET-BKB China Education and Research Network Center, CN
	  AS4837  - CHINA169-Backbone CHINA UNICOM China169 Backbone, CN
addr:	  Network Research Center Main Bldg Tsinghua Univ Beijing 100084 China
online:	  1 » latency: 289 ms (289ms) 

see also:
   121.248.0.0/14   AS4538   NJR-CERNET China Education and Research Network, CN
   121.250.0.0/15   AS4538   NJR-CERNET China Education and Research Network, CN