AS17936 Cable Television Kani Co.,Inc.

CTK - Cable Television Kani Co.,Inc. · registered in Japan

IPv4 addresses18,4325 prefixes · <0.001% of announced IPv4

Rank in Japan#258largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#6,407of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS17936 in ASN lookup Look up an IP in this network (125.2.208.1) All networks in Japan

IPv4 prefixes

All 5 prefixes, in address order.

125.2.208.0/20
203.104.112.0/20
203.110.224.0/21
218.40.240.0/20
218.228.80.0/20

IPv6 prefixes

All 1 prefix.

2406:9900::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS59109#255 HITCLOUD - Hitachi,Ltd., Managed & Platform Services Business Division19,456

AS151386#256 NCJ-NET - NHN Cloud Japan Corporation18,688

AS10011#257 ADVAN - advanscope inc.18,432

AS23627#259 UCVNET - UEDA CABLE VISION CO.,LTD.18,432

AS23831#260 CLOVERNET - NISIOWARI CATV CORPORATION18,432

AS24271#261 iCTV - Iruma CATV co.18,432

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