AS23831 NISIOWARI CATV CORPORATION

CLOVERNET - NISIOWARI CATV CORPORATION · registered in Japan

IPv4 addresses18,4327 prefixes · <0.001% of announced IPv4

Rank in Japan#260largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#6,410of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS23831 in ASN lookup Look up an IP in this network (103.6.16.1) All networks in Japan

IPv4 prefixes

All 7 prefixes, in address order.

103.6.16.0/22
103.235.112.0/22
115.85.136.0/21
116.90.144.0/20
202.179.32.0/19
219.100.128.0/22
223.27.180.0/22

IPv6 prefixes

All 1 prefix.

2401:2f20::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

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AS17936#258 CTK - Cable Television Kani Co.,Inc.18,432

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

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

AS24277#262 NIRAI - Okinawa Cable Network Inc.18,432

AS23784#263 POLEXCHENGE - SQUARE ENIX CO., LTD.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