AS131953 NPO Yutopianet

YUTOPIA-NET - NPO Yutopianet · registered in Japan

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Japan#615largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#53,219of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS131953 in ASN lookup Look up an IP in this network (103.153.204.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

103.153.204.0/23

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS131902#612 LOGICLINKS2 - LogicLinks, Inc.512

AS131940#613 BETANET - Nissho Electronics Corp.512

AS131946#614 MU-NET - MUSASHINO UNIVERSITY E.F.512

AS131977#616 JPF-WEB - Japan Photo Finish Corporation512

AS131983#617 SCNTV-NET - suo cablenet corporation512

AS132504#618 QUALITIA-AS-AP - QUALITIA Co.,Ltd512

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