66.136.0.0/13

ip:	66.136.0.0 
loc:	United States, Plano (Texas)  
isp:	AS7018 AT&T Enterprises, LLC » AT&T Enterprises, LLC » AkerCoflex 138.232 ms
route:	66.136.0.0/13, SBCIS-SIS80 - AT&T Enterprises, LLC, US (Plano) ... 
reg:	66.136.0.0/13, US, ARIN, 2001-06-05
asn:	AS7018 - ATT-INTERNET4 AT&T Enterprises LLC, US
	  AS3356  - LEVEL3 Level 3 Parent, LLC, US
	  AS1299  - TWELVE99 Arelion, f/k/a Telia Carrier, SE
	  AS2914  - NTT-DATA-2914 NTT America, Inc., US
	  AS3257  - GTT-BACKBONE GTT, US
	  AS2497  - IIJ Internet Initiative Japan Inc., JP
	  AS174   - COGENT-174 Cogent Communications, US
	  AS6461  - ZAYO-6461 Zayo Bandwidth, US
	  AS6939  - HURRICANE Hurricane Electric LLC, US
	  AS6830  - LibertyGlobal Liberty Global (formerly UPC Broadband Holding, aka AORTA), NL
addr:	  208 S. Akard St. Dallas TX 75202 US
online:	  9.470 » latency: 132 ms (224ms) 

see also:
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   66.136.112.0/24  AS32505  SBCIS-052810102553 Fort Bliss Federal Credit Union, US
   66.138.158.0/24  AS4917   NET-66-138-158-0-1 AMDOCS Inc., US
   66.139.27.0/24   AS395238  SBC06613902700024040623150456 Brazosport ISD, US
   66.140.111.0/24  AS10421  SBC066140111000030728 Texas Tech University, US
   66.141.192.0/23  AS400218  NET-66-141-192-0-1 Cherokee Nation Government, US
   66.141.233.0/24  AS29790  SBC066141233000021017 New Liberty Hospital District of Clay County Missouri, US
   66.142.195.0/24  AS27268  SBC066142195000021009 Chickasaw Nation, US
   66.142.244.0/24  AS46202  SBC066142244000021009 Michael's Store, US
   66.142.245.0/24  AS11427  SBC066142245000030122 TD Industries, US
   66.143.174.0/24  AS5671   SBC066143174000021121 SBC Technology Resources, US