IPv4 prefix

51.8.0.0/17

IP Prefix (CIDR): 51.8.0.0/17
Subnet Mask: 255.255.128.0
Address Count: 32,768
IP Range: 51.8.0.0 - 51.8.127.255
Subnet calculator: Calculate subnet details

Registered Owner

Handle: MICROSOFT-MAINT
Country: United States of America (US)
Registry: RIPENCC
Registered Prefix: 51.8.0.0/17 (51.8.0.0 - 51.8.127.255)
Delegated Prefix: 51.8.0.0/16 (51.8.0.0 - 51.8.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
51.8.0.0/16	Covering	AS8075	Microsoft Corporation	United States of America (US)	51.8.0.0	51.8.255.255