12.147.1.0/24

ip:	12.147.1.0 
loc:	United States, San Diego (California)  
isp:	AS26295 AS26295 » AT&T Services » Argent Energy US Holdings 688.895 ms
route:	12.147.1.0/24, SHELL-OI94-1 - SHELL OIL COMPANY, US (San Diego (University City)) ... 
reg:	12.0.0.0/8, US, ARIN, 1983-08-23
asn:	AS26295 - GRUNDY-ELECTRIC272375 Grundy Electric.272375, US
addr:	  4445 EASTGATE MALL SD CA 92121 US
online:	  3 » latency: 163 ms (163ms) 

see also:
   12.0.0.0/8       AS7018   NET12 American Registry for Internet Numbers, US
   12.128.0.0/9     AS7018   NET12 American Registry for Internet Numbers, US