52.122.32.0/22

ip:	52.122.32.0 
loc:	Japan, Tokyo (Tokyo)  
isp:	AS8069 Microsoft Corporation » Microsoft Corporation » Microsoft Azure Cloud (japaneast) 442.399 ms
route:	52.122.32.0/22, MSFT - Microsoft Corporation, JP (TOKYO) ... 
reg:	52.120.0.0/14, US, ARIN, 2015-11-24
asn:	AS8069 - MICROSOFT-CORP-MSN-AS-BLOCK Microsoft Corporation, US
	  AS2914  - NTT-DATA-2914 NTT America, Inc., US
addr:	  One Microsoft Way Redmond WA 98052 US
online:	  13 » latency: 268 ms (268ms) 

see also:
   52.120.0.0/14    AS8075   MSFT Microsoft Corporation, US