AS131958 Tama Cable Network Co.,Ltd.

t-net - Tama Cable Network Co.,Ltd. · registered in Japan

IPv4 addresses26,1126 prefixes · <0.001% of announced IPv4

Rank in Japan#222largest network in JP by IPv4 space, of 724 · 0.02% of JP

Rank worldwide#5,332of 79,396 networks with IPv4

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

CountryJapan745 ASNs registered there

Open AS131958 in ASN lookup Look up an IP in this network (103.144.122.1) All networks in Japan

IPv4 prefixes

All 6 prefixes, in address order.

103.144.122.0/23
133.32.192.0/21
133.226.176.0/21
133.238.64.0/18
157.14.64.0/20
202.233.72.0/22

IPv6 prefixes

All 1 prefix.

2405:6cc0::/32

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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