Autonomous System
AS63777 National Institutes of Natural Sciences National Astronomical Observatory of JAPAN
BusinessActiveJapanJPNIC
AS63777 (STARCLUSTER) is a business network operated by National Institutes of Natural Sciences National Astronomical Observatory of JAPAN in Japan, registered with JPNIC. It has 1 IPv4 prefix with 65,536 addresses, which makes it the 3,841st largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses65,536in 1 prefix
IPv6 prefixes0none
Size rank#3,841of 82,200 active ASNs
Details
OrganizationNational Institutes of Natural Sciences National Astronomical Observatory of JAPAN
AS nameSTARCLUSTER
Websitenao.ac.jp
Country Japan (JP)
Network typeBusiness
RegistryJPNIC
Abuse contact—
Registered—
Last updated2019-03-05
IPv4 prefixes
1 prefix · 65,536 addresses| Network | Addresses | First – last address |
|---|---|---|
| 133.40.0.0/16 | 65,536 | 133.40.0.0 – 133.40.255.255 |
133.40.0.0/16
IPv6 prefixes
No IPv6 prefixes.
Query AS63777 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=AS63777&key=YOUR_API_KEY"Any address in its prefixes resolves to AS63777, with or without a key:
curl "https://api.ipapi.is/?q=133.40.0.1"Largest networks in Japan
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