166.58.0.0/16

ip:	166.58.0.0 
loc:	United States, New York (New York)  
isp:	AS3371 Verizon Business » Verizon Business » MCI Telecommunications 150.485 ms
route:	166.58.0.0/16, MCICS - Verizon Business, US (Chicago) ... 
reg:	166.58.0.0/16, US, ARIN, 1993-03-24
asn:	AS3371 - MCI-ASN Verizon Business, US
	  AS3378  - MCI-ASN Verizon Business, US
addr:	  22001 Loudoun County Pkwy Ashburn VA 20147 US
online:	  3 » latency: 160 ms (160ms) 

see also:
   166.58.0.0/22    AS3377   MCI-NETCS29 Verizon Business, US
   166.58.4.0/22    AS3377   MCI-NETCS29 Verizon Business, US
   166.58.8.0/22    AS3377   MCI-NETCS29 Verizon Business, US
   166.58.12.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.16.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.20.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.24.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.28.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.32.0/22   AS3377   MCI-NETCS29 MCI Telecommunications, US
   166.58.36.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.40.0/22   AS3377   MCI-NETCS29 MCI Telecommunications, US
   166.58.44.0/22   AS3377   MCI-NETCS29 Verizon Business, US
   166.58.128.0/20  AS3372   MCI-NETCS29 Verizon Business, US
   166.58.224.0/20  AS3372   MCI-NETCS29 Verizon Business, US
   166.58.248.0/22  AS3372   MCI-NETCS29 Verizon Business, US
   166.58.252.0/22  AS3372   MCI-NETCS29 Verizon Business, US