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AS9367 Institute of Science Tokyo

ISCT - Institute of Science Tokyo · registered in Japan

IPv4 addresses65,5369 prefixes · 0.002% of announced IPv4
Rank in Japan#114largest network in JP by IPv4 space, of 724 · 0.04% of JP
Rank worldwide#2,874of 79,396 networks with IPv4
IPv61 x /32 (65,536 x /48)1 prefixes
CountryJapan745 ASNs registered there

IPv4 prefixes

All 9 prefixes, in address order.

  • 131.112.0.0/17
  • 131.112.128.0/18
  • 131.112.192.0/19
  • 131.112.224.0/20
  • 131.112.240.0/21
  • 131.112.248.0/22
  • 131.112.252.0/23
  • 131.112.254.0/24
  • 131.112.255.0/24

IPv6 prefixes

All 1 prefix.

  • 2403:4440::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses
AS131158#111 NAIST-AS - Nara Institute of Science and Technology, National University Corporation66,048
AS17932#112 JAIST - Japan Advanced Institute of Science and Technology65,792
AS17944#113 JWA - Japan Weather Association65,792
AS131161#115 NECCN - NEC Corporation65,536
AS2500#116 WIDE-BB - WIDE Project65,536
AS9991#117 SHUDO-U - Hiroshima Shudo University65,536

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources