AS18134 JCOM Co., Ltd.

KITANET - JCOM Co., Ltd. · registered in Japan

IPv4 addresses29,6968 prefixes · <0.001% of announced IPv4

Rank in Japan#212largest network in JP by IPv4 space, of 724 · 0.02% of JP

Rank worldwide#5,049of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS18134 in ASN lookup Look up an IP in this network (103.55.196.1) All networks in Japan

IPv4 prefixes

All 8 prefixes, in address order.

103.55.196.0/22
111.125.144.0/21
113.197.16.0/20
122.50.32.0/19
202.57.224.0/20
203.217.180.0/22
219.100.24.0/22
219.112.128.0/19

Other ASNs named JCOM Co., Ltd.

10 other networks use the same organisation name; together with AS18134 they announce 6,733,824 IPv4 addresses.

ASNNameIPv4 addresses

AS9824JTCL-JP-AS - JCOM Co., Ltd. JP4,745,216

AS9617ZAQ - JCOM Co., Ltd. JP1,163,264

AS4721JCN - JCOM Co., Ltd. JP631,808

AS9378CABLENET - JCOM Co., Ltd. JP45,056

AS18136CTA - JCOM Co., Ltd. JP43,008

AS23788HICT - JCOM Co., Ltd. JP24,576

AS24276ICNET - JCOM Co., Ltd. JP20,480

AS23790KCN-TV - JCOM Co., Ltd. JP18,432

AS7686ATNETHOME - JCOM Co., Ltd. JP8,192

AS45675KMN-TOKYO - JCOM Co., Ltd. JP4,096

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS131916#209 BAYNET - Tokyo Bay Network Co.,Ltd.31,744

AS4675#210 U-NETSURF - UNIADEX, LTD.30,976

AS7668#211 HTCN - Hokuriku Telecommunication Network Co.29,696

AS10002#213 ICT - IGAUENO CABLE TELEVISION CO.,LTD28,672

AS23629#214 OCTV - Obihiro City Cable Co.,Ltd.28,160

AS18283#215 CCV - Chupicom Inc.27,648

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