AS18126 Chubu Telecommunications Company, Inc.

CTCX - Chubu Telecommunications Company, Inc. · registered in Japan

IPv4 addresses1,505,53645 prefixes · 0.048% of announced IPv4

Rank in Japan#17largest network in JP by IPv4 space, of 724 · 0.93% of JP

Rank worldwide#265of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountryJapan745 ASNs registered there

Open AS18126 in ASN lookup Look up an IP in this network (14.132.0.1) All networks in Japan

IPv4 prefixes

All 45 prefixes, in address order.

14.132.0.0/15
14.192.32.0/20
45.114.16.0/22
45.119.164.0/22
59.130.0.0/16
103.2.20.0/22
103.41.136.0/22
103.44.84.0/22
103.64.132.0/22
112.137.56.0/21
113.155.0.0/16
115.36.0.0/14
118.104.0.0/15
118.106.0.0/16
123.1.0.0/17
123.48.0.0/16
124.18.0.0/16
133.88.227.0/24
133.88.228.0/22
133.88.232.0/21
133.88.240.0/20
150.49.0.0/17
150.49.128.0/18
150.49.192.0/19
150.49.224.0/20
150.49.240.0/21
150.49.248.0/22
150.49.252.0/23
162.4.98.0/23
163.46.0.0/16
180.196.0.0/14
202.41.208.0/20
202.62.160.0/20
202.124.0.0/20
202.124.208.0/20
202.142.224.0/19
202.150.48.0/21
203.129.112.0/20
203.209.176.0/22
210.173.144.0/20
218.216.176.0/20
219.8.0.0/16
219.117.32.0/20
222.9.0.0/16
223.29.0.0/17

IPv6 prefixes

All 2 prefixes.

2001:f58::/32
2402:6b00::/32

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AS10010#18 TOKAI - TOKAI Communications Corporation1,497,088

AS2519#19 VECTANT - ARTERIA Networks Corporation1,464,320

AS4685#20 ASAHI-NET - Asahi Net1,277,952

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