31.13.82.0/24

ip:	31.13.82.0 
loc:	Japan, Tokyo (Tokyo)  
isp:	AS32934 Facebook, Inc. » Facebook, Inc. » Facebook, Inc 0.989 ms
route:	31.13.82.0/24, IE-FACEBOOK-20110418 - Meta Platforms Ireland Limited, IE (Chiyoda City) ... 
reg:	31.13.64.0/18, JP, RIPE, 2011-04-18
asn:	AS32934 - FACEBOOK Facebook Inc., US
addr:	  Merrion Road Dublin 4 D04 X2K5 Dublin IRELAND
online:	  117 » latency: 248 ms (248ms) 

see also:
   31.13.64.0/18    AS32934  IE-FACEBOOK-20110418 Meta Platforms Ireland Limited, IE