IPv4 prefix

4.173.128.0/20

IP Prefix (CIDR): 4.173.128.0/20
Subnet Mask: 255.255.240.0
Address Count: 4,096
IP Range: 4.173.128.0 - 4.173.143.255
Subnet calculator: Calculate subnet details

Registered Owner

Owner: Microsoft Corporation
Handle: MSFT
Address: One Microsoft Way Redmond WA 98052 United States
Registry: ARIN
Registered Prefix: 4.160.0.0/12 (4.160.0.0 - 4.175.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
4.160.0.0/11	Covering	AS8075	Microsoft Corporation	United States of America (US)	4.160.0.0	4.191.255.255