Autonomous System

AS2500 WIDE Project

BusinessActiveJapanJPNIC

AS2500 (WIDE-BB) is a business network operated by WIDE Project in Japan, registered with JPNIC. It has 3 IPv4 prefixes with 65,536 addresses and 1 IPv6 prefix, which makes it the 3,544th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses65,536in 3 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#3,544of 82,200 active ASNs
Abuser scoreVery Low0.01% of its addresses flagged · method

Details

OrganizationWIDE Project
AS nameWIDE-BB
Websitewide.ad.jp
Country Japan (JP)
Network typeBusiness
RegistryJPNIC
Abuse contact—
Registered—
Last updated2006-11-14

IPv4 prefixes

3 prefixes · 65,536 addresses
NetworkAddressesFirst – last address
203.178.128.0/1732,768203.178.128.0 – 203.178.255.255
133.4.128.0/1816,384133.4.128.0 – 133.4.191.255
202.249.0.0/1816,384202.249.0.0 – 202.249.63.255

IPv6 prefixes

1 prefix
  • 2001:200::/32

Query AS2500 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=AS2500&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS2500, with or without a key:

curl "https://api.ipapi.is/?q=203.178.128.1"

Largest networks in Japan

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