AS23788 JCOM Co., Ltd.

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

IPv4 addresses24,5767 prefixes · <0.001% of announced IPv4

Rank in Japan#227largest network in JP by IPv4 space, of 724 · 0.02% of JP

Rank worldwide#5,532of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS23788 in ASN lookup Look up an IP in this network (103.192.68.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

103.192.68.0/22
110.172.0.0/20
119.82.192.0/20
175.111.120.0/21
202.148.240.0/20
202.162.128.0/19
219.100.152.0/22

Other ASNs named JCOM Co., Ltd.

10 other networks use the same organisation name; together with AS23788 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

AS18134KITANET - JCOM Co., Ltd. JP29,696

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

AS23661#224 CLARA-AS-AP - CLARA, Inc.24,832

AS55386#225 FJcloud-West - FUJITSU LIMITED24,832

AS17950#226 SaiNet-AS - SaiNet24,576

AS4723#228 DOLPHIN - Dolphin23,808

AS17682#229 CABLENET296 - 296 BROAD NET Com Inc23,552

AS135161#230 GMO-Z-COM-TH - GMO-Z com NetDesign Holdings Co., Ltd.23,040

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