Autonomous System

AS9355 National Institute of Information and Communications Technology

GovernmentActiveJapanJPNIC

AS9355 (NICT) is a government network operated by National Institute of Information and Communications Technology in Japan, registered with JPNIC. It has 2 IPv4 prefixes with 131,072 addresses and 1 IPv6 prefix, which makes it the 1,920th largest of 82,141 active autonomous systems by IPv4 space.

IPv4 addresses131,072in 2 prefixes
IPv6 prefixes1≈ 1.2 × 10²⁴ addresses
Size rank#1,920of 82,141 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationNational Institute of Information and Communications Technology
AS nameNICT
Websitenict.go.jp
Country Japan (JP)
Network typeGovernment
RegistryJPNIC
Abuse contact—
Registered—
Last updated2025-12-22

IPv4 prefixes

2 prefixes · 131,072 addresses
NetworkAddressesFirst – last address
133.140.0.0/1665,536133.140.0.0 – 133.140.255.255
133.243.0.0/1665,536133.243.0.0 – 133.243.255.255

IPv6 prefixes

1 prefix
  • 2001:df0:232::/48

Query AS9355 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=AS9355&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS9355, with or without a key:

curl "https://api.ipapi.is/?q=133.140.0.1"

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