AS18123 — SEIRYO INAOKI EDUCATIONAL INSTITUTION

AS18123 announces 2 IPv4 prefixes covering 1,536 addresses and 1 IPv6 prefixes.

About this network

SEIRYO INAOKI EDUCATIONAL INSTITUTION is the AS handle for Seiryo - Inaoki Educational Institution.

What it's used for

• The address space is registered under JPNIC netnames KIWINET-CIDR-BLK-JP and JPNIC-NET-JP, indicating standard allocation from the Japan Network Information Center.
• The AS announces 1536 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, suggesting a small-scale internal or access network rather than a transit provider.

Notable

• Registrants for both announced prefixes are listed as Japan Network Information Center and IRT-JPNIC-JP, which is standard for JPNIC-managed space and does not indicate a mismatch with the announcer.
• The inventory consists of one /22 and one /23 block, representing a modest address footprint consistent with a single institutional site.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 202.236.76.0/22
• 202.244.84.0/23
• 2001:df0:2e4::/48

Upstream networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics
• AS7668 Hokuriku Telecommunication Network Co.

Adjacent networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics
• AS7668 Hokuriku Telecommunication Network Co.