57.141.0.0/16

ip:	57.141.0.0 
loc:	United States, Ashburn (Virginia)  
isp:	AS32934 Facebook, Inc. » Facebook, Inc. » Facebook, Inc 2.734 ms
route:	57.141.0.0/16, FB-BLOCK - , IE ... 
reg:	57.141.0.0/16, IE, RIPE, 1993-06-21
asn:	AS32934 - FACEBOOK Facebook Inc., US
addr:	  
online:	  748 » latency: 121 ms (112ms) 

see also:
   57.141.0.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.1.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.2.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.3.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.4.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.5.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.6.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.7.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.8.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, DE
   57.141.9.0/24    AS32934  FB-BLOCK Meta Platforms Ireland Limited, DE
   57.141.10.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, GB
   57.141.11.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, GB
   57.141.12.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, SG
   57.141.13.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, SG
   57.141.14.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.15.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.16.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, US
   57.141.17.0/24   AS32934  FB-BLOCK Meta Platforms Ireland Limited, US