IPv4 prefix

203.183.154.0/23

IP Prefix (CIDR)

203.183.154.0/23

Subnet Mask

255.255.254.0

Address Count

512

IP Range

203.183.154.0 - 203.183.155.255

Subnet calculator

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Registered Owner

Owner

Japan Network Information Center

Handle

JNIC1-AP

Country

Japan (JP)

Address

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

Registry

JPNIC

Registered Prefix

203.183.154.0/23 (203.183.154.0 - 203.183.155.255)

Delegated Prefix

203.180.0.0/14 (203.180.0.0 - 203.183.255.255)

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
203.183.154.0/23	Exact	AS4725	SoftBank Corp.	Japan (JP)	203.183.154.0	203.183.155.255