Autonomous System
AS2523 Internet Technology Research Consortium
BusinessActiveJapanAPNIC
AS2523 (ITRC-NET) is a business network operated by Internet Technology Research Consortium in Japan, registered with APNIC. It has 3 IPv4 prefixes with 73,728 addresses and 1 IPv6 prefix, which makes it the 2,861st largest of 82,141 active autonomous systems by IPv4 space.
IPv4 addresses73,728in 3 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#2,861of 82,141 active ASNs
Details
OrganizationInternet Technology Research Consortium
AS nameITRC-NET
Websiteitrc.net
Country Japan (JP)
Network typeBusiness
RegistryAPNIC
Abuse contacthostmaster@nic.ad.jp
Registered—
Last updated2024-10-15
IPv4 prefixes
3 prefixes · 73,728 addresses| Network | Addresses | First – last address |
|---|---|---|
| 133.69.0.0/16 | 65,536 | 133.69.0.0 – 133.69.255.255 |
| 133.69.0.0/20 | 4,096 | 133.69.0.0 – 133.69.15.255 |
| 133.69.192.0/20 | 4,096 | 133.69.192.0 – 133.69.207.255 |
133.69.0.0/16 133.69.0.0/20 133.69.192.0/20
IPv6 prefixes
1 prefix- 2407:e0c0::/32
2407:e0c0::/32
Query AS2523 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS2523&key=YOUR_API_KEY"Any address in its prefixes resolves to AS2523, with or without a key:
curl "https://api.ipapi.is/?q=133.69.0.1"Largest networks in Japan
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