IPv4 prefix

1.66.128.0/17

IP Prefix (CIDR)

1.66.128.0/17

Subnet Mask

255.255.128.0

Address Count

32,768

IP Range

1.66.128.0 - 1.66.255.255

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

JPNIC

Registered Prefix

1.66.0.0/15 (1.66.0.0 - 1.67.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
1.66.128.0/17	Exact	AS9605	NTT DOCOMO INC.	Japan (JP)	1.66.128.0	1.66.255.255