IPv4 prefix

133.72.0.0/15

IP Prefix (CIDR)

133.72.0.0/15

Subnet Mask

255.254.0.0

Address Count

131,072

IP Range

133.72.0.0 - 133.73.255.255

Subnet calculator

Calculate subnet details

Registered Owner

Handle

IRT-JPNIC-JP

Country

Japan (JP)

Address

Uchikanda OS Bldg 4F, 2-12-6 Uchi-Kanda Chiyoda-ku, Tokyo 101-0047, japan

Registry

APNIC

Registered Prefix

133.0.0.0/8 (133.0.0.0 - 133.255.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
133.72.0.0/15	Exact	AS2907	Research Organization of Information and Systems National Institute of Informatics	Japan (JP)	133.72.0.0	133.73.255.255