Autonomous System
AS131158 Nara Institute of Science and Technology, National University Corporation
EducationActiveJapanJPNIC
AS131158 (NAIST-AS) is an education network operated by Nara Institute of Science and Technology, National University Corporation in Japan, registered with JPNIC. It has 2 IPv4 prefixes with 66,048 addresses and 1 IPv6 prefix, which makes it the 3,405th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses66,048in 2 prefixes
IPv6 prefixes1≈ 1.2 × 10²⁴ addresses
Size rank#3,405of 82,200 active ASNs
Details
OrganizationNara Institute of Science and Technology, National University Corporation
AS nameNAIST-AS
Websitenaist.jp
Country Japan (JP)
Network typeEducation
RegistryJPNIC
Abuse contacthostmaster@idnic.net
Registered—
Last updated2021-10-30
IPv4 prefixes
2 prefixes · 66,048 addresses| Network | Addresses | First – last address |
|---|---|---|
| 163.221.0.0/16 | 65,536 | 163.221.0.0 – 163.221.255.255 |
| 192.218.128.0/23 | 512 | 192.218.128.0 – 192.218.129.255 |
163.221.0.0/16 192.218.128.0/23
IPv6 prefixes
1 prefix- 2001:df3:540::/48
2001:df3:540::/48
Query AS131158 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=AS131158&key=YOUR_API_KEY"Any address in its prefixes resolves to AS131158, with or without a key:
curl "https://api.ipapi.is/?q=163.221.0.1"Largest networks in Japan
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