AS17957 SOUTH TOKYO CABLETELEVISION

CTS - SOUTH TOKYO CABLETELEVISION · registered in Japan

IPv4 addresses19,4566 prefixes · <0.001% of announced IPv4

Rank in Japan#254largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#6,256of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS17957 in ASN lookup Look up an IP in this network (49.236.232.1) All networks in Japan

IPv4 prefixes

All 6 prefixes, in address order.

49.236.232.0/21
110.232.236.0/22
115.165.184.0/21
202.122.24.0/21
210.191.128.0/19
219.103.96.0/20

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS59107#251 HTV-NET - Hachinohe Cable Television Co.20,480

AS9999#252 ATTOKYO - AT TOKYO Corporation20,224

AS17516#253 NTTCOMWARE - NTT COMWARE CORPORATION19,456

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

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