AS45675 JCOM Co., Ltd.

KMN-TOKYO - JCOM Co., Ltd. · registered in Japan

IPv4 addresses4,0961 prefixes · <0.001% of announced IPv4

Rank in Japan#413largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#16,128of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS45675 in ASN lookup Look up an IP in this network (219.111.192.1) All networks in Japan

IPv4 prefixes

All 1 prefix, in address order.

219.111.192.0/20

Other ASNs named JCOM Co., Ltd.

10 other networks use the same organisation name; together with AS45675 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

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

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS24264#410 KANAZAWA-IT - Kanazawa Institute of Technology4,096

AS37898#411 BARTOK-NET - digitiminimi, inc.4,096

AS45672#412 KGC-NET - Koga Cable TV Co., Ltd.4,096

AS45690#414 JCTV-NET - Nihon Central TV Co.,Inc.4,096

AS131943#415 goto-tv - Goto tv4,096

AS152861#416 CIT-NET - Chiba Institute of Technology4,096

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