Data as of Nov 9, 2026

192.51.194.0/24

No anonymizer space · no proxy exits in 30 days

Research Organization of Information and Systems, National Institute of Informatics · space held by imported inetnum object for JNIC

Announcement

No RPKI

Announced by

Type

Business

Risk

0 / 100 · Low

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

Range	Addresses	Netname	Holder	Type	Created	Abuse contact
192.51.194.0 - 192.51.239.255	11,776	JAPAN-INET-BLOCK4	imported inetnum object for JNIC	ALLOCATED PORTABLE	—	hostmaster@nic.ad.jp
└ 192.51.194.0/24	256	HOKUSEI	Hokusei Gakuen University	ASSIGNED PORTABLE	—	hostmaster@nic.ad.jp

Announced by

Prefix: 192.51.194.0/23
Announced by: AS2907 Research Organization of Information and Systems, National Institute of Informatics
Type: Business
Proxy exits: 2
RPKI: No RPKI
Netname: HOKUSEI-CIDR-BLK-JP
Registrant: Hokusei Gakuen University
RIR: APNIC

Registry

Origin network

Name: Research Organization of Information and Systems, National Institute of Informatics
Type: Education
Registered: Aug 1, 2002
Domain: sinet.ad.jp
Website: www.sinet.ad.jp/
Industry: Internet Service Provider (ISP)
Spamhaus ASN-DROP: not listed