AS131941 Entsu Co.,Ltd.

ENTSU-NET - Entsu Co.,Ltd. · registered in Japan

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in Japan#555largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#38,705of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS131941 in ASN lookup Look up an IP in this network (103.121.44.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

103.121.44.0/22

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS63789#552 NEXT-WEB - NeXtWEB Corporation1,024

AS131901#553 fidessa-kk - FIDESSA KK1,024

AS131939#554 IPSISM-NET - IPS INC1,024

AS131942#556 GURUNAVI-NET - Gurunavi, Inc.1,024

AS131945#557 SNTU-NET - Sanntuu Corporation1,024

AS131961#558 DOKKYO-AS - Dokkyo University1,024

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