IPv4 prefix

138.91.0.0/16

IP Prefix (CIDR): 138.91.0.0/16
Subnet Mask: 255.255.0.0
Address Count: 65,536
IP Range: 138.91.0.0 - 138.91.255.255
Subnet calculator: Calculate subnet details

Registered Owner

Owner: Microsoft Corp
Handle: MSFT-Z
Address: One Microsoft Way Redmond WA 98052 United States
Registry: ARIN
Registered Prefix: 138.91.0.0/16 (138.91.0.0 - 138.91.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
138.91.0.0/16	Exact	AS8075	Microsoft Corporation	United States of America (US)	138.91.0.0	138.91.255.255