AS17523 — AOYAMA Aoyama Gakuin University

AS17523 announces 1 IPv4 prefixes covering 65,536 addresses and 1 IPv6 prefixes.

About this network

AOYAMA is the autonomous system for Aoyama Gakuin University.

What it's used for

• The space carries the university's internal network infrastructure, identified by the registry holder "Aoyama Gakuin University" and the JPNIC netname JPNIC-NET-JP-ERX.
• The AS announces 65536 IPv4 addresses within a single /16 prefix (133.2.0.0/16) and one IPv6 prefix (2001:df7:7800::/48). With only 1 observed neighbour, this ratio indicates a terminal access network rather than a transit provider.

Notable

• The RDAP registrant for the announced block is the Japan Network Information Center (JPNIC), which is the standard registry for Japanese address space and aligns with the university's location.
• The address inventory consists of a single contiguous IPv4 block and a single IPv6 prefix, typical for a large institutional campus network.

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

Announced prefixes

• 133.2.0.0/16
• 2001:df7:7800::/48

Upstream networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics

Adjacent networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 2 route objects.
• Listed in as-sets: AS-ANC-CUSTOMER-PROXY-REGISTER, AS-IIJ, AS-IIJ6, AS-KDD, AS-OCN, AS-OCN, AS-OCN-V6, AS-OCN-V6, AS-PNAPTOK, AS-WIDE, AS20965:AS-FROM-TEIN-TO-GEANT, AS2497:AS-IIJ, AS2497:AS-IIJ6.