AS55388 ASJ INC.

ASJ - ASJ INC. · registered in Japan

IPv4 addresses12,2882 prefixes · <0.001% of announced IPv4

Rank in Japan#290largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#8,146of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS55388 in ASN lookup Look up an IP in this network (27.127.240.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

27.127.240.0/20
219.118.192.0/19

IPv6 prefixes

All 1 prefix.

2405:2a00::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS58650#287 CATVWINK - Warabi Cable Vision Co., Ltd.12,800

AS23628#288 ACCSnet - Academic newtown Community Cable Service12,288

AS55385#289 DA - Digital Alliance Co.,Ltd.12,288

AS4695#291 URBAN - Enecom,Inc.12,288

AS18075#292 HICAT - Chupicom Inc.12,288

AS18142#293 BIWALOBE - KISTEM Co., Ltd.12,288

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