IPv4 prefix

1.81.0.0/21

IP Prefix (CIDR): 1.81.0.0/21
Subnet Mask: 255.255.248.0
Address Count: 2,048
IP Range: 1.81.0.0 - 1.81.7.255
Subnet calculator: Calculate subnet details

Registered Owner

Handle: IRT-CHINANET-CN
Country: China (CN)
Address: No.31 ,jingrong street,beijing 100032
Registry: APNIC
Registered Prefix: 1.80.0.0/13 (1.80.0.0 - 1.87.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
1.81.0.0/21	Exact	AS134768	CHINANET SHAANXI province Cloud Base network	China (CN)	1.81.0.0	1.81.7.255