AS151385 Japanet Holdings Co.,Ltd.

JAPANET-H - Japanet Holdings Co.,Ltd. · registered in Japan

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in Japan#631largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#55,274of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS151385 in ASN lookup Look up an IP in this network (157.66.22.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

157.66.22.0/23

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS150356#628 GMO-BRS - GMO BRAND SECURITY Inc.512

AS151350#629 NIPPONCOMMSINC-AS-AP - NIPPON COMMUNICATIONS INC.512

AS151383#630 EZSVS-NET - EZSVS Japan Co., Ltd.512

AS151390#632 RUTILEA-A - RUTILEA, Inc.512

AS152872#633 VL-NET - VirtualLink Networks512

AS38215#634 SYUHEIUDA-AS-AP - Syuhei Uda256

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