AS2512 TCP Inc.

TCP-NET - TCP Inc. · registered in Japan

IPv4 addresses20,48015 prefixes · <0.001% of announced IPv4

Rank in Japan#249largest network in JP by IPv4 space, of 724 · 0.01% of JP

Rank worldwide#6,082of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS2512 in ASN lookup Look up an IP in this network (157.14.0.1) All networks in Japan

IPv4 prefixes

All 15 prefixes, in address order.

157.14.0.0/23
157.14.4.0/22
157.14.8.0/21
157.14.16.0/22
157.14.24.0/21
157.14.48.0/21
157.14.80.0/23
157.14.128.0/22
157.14.214.0/23
157.14.250.0/23
192.244.203.0/24
202.241.143.0/24
202.241.157.0/24
202.241.177.0/24
210.134.224.0/19

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS24278#246 USEN-NET - USEN CORPORATION20,480

AS18281#247 TAC-NET - Tokoname New-TV Corporation20,480

AS18267#248 DOSHISHA - Doshisha University20,480

AS24276#250 ICNET - JCOM Co., Ltd.20,480

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

AS9999#252 ATTOKYO - AT TOKYO Corporation20,224

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