Autonomous System
AS18087 Toyo University
EducationActiveJapanJPNIC
AS18087 (TOYO) is an education network operated by Toyo University in Japan, registered with JPNIC. It has 4 IPv4 prefixes with 135,168 addresses and 2 IPv6 prefixes, which makes it the 1,761st largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses135,168in 4 prefixes
IPv6 prefixes2≈ 1.3 × 10²⁴ addresses
Size rank#1,761of 82,200 active ASNs
Details
OrganizationToyo University
AS nameTOYO
Websitetoyo.ac.jp
Country Japan (JP)
Network typeEducation
RegistryJPNIC
Abuse contact—
Registered—
Last updated2017-02-16
IPv4 prefixes
4 prefixes · 135,168 addresses| Network | Addresses | First – last address |
|---|---|---|
| 133.79.0.0/16 | 65,536 | 133.79.0.0 – 133.79.255.255 |
| 133.79.0.0/17 | 32,768 | 133.79.0.0 – 133.79.127.255 |
| 133.79.128.0/17 | 32,768 | 133.79.128.0 – 133.79.255.255 |
| 133.79.192.0/20 | 4,096 | 133.79.192.0 – 133.79.207.255 |
133.79.0.0/16 133.79.0.0/17 133.79.128.0/17 133.79.192.0/20
IPv6 prefixes
2 prefixes- 2001:df7:5600::/48
- 2001:df7:5600:8000::/52
2001:df7:5600::/48 2001:df7:5600:8000::/52
Query AS18087 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=AS18087&key=YOUR_API_KEY"Any address in its prefixes resolves to AS18087, with or without a key:
curl "https://api.ipapi.is/?q=133.79.0.1"Largest networks in Japan
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