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ASN Lookup Tool
AS2500 WIDE Project

An Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.

ASN Lookup for:

AS2500

Powered By:
ASN Extended Info API
BGP IPv4 Active Prefixes API
ASN Details JSON View

ASN Details

ASN
AS2500
Organisation
WIDE Project
AS Name
WIDE-BB
IPv4 Addresses Announced
193,920
IPv4 Prefixes Announced
14
Bogon Prefixes Announced
0
IPv4 Space Rank
#1,170 out of 74,715
Registry
JPNIC
Registered Country
JP flag JP
Registration Date
Registration Change

Receiving From

ASN
Organisation
ASN
AS4713
Organisation
JP flag NTT Communications Corporation
ASN
AS2516
Organisation
JP flag KDDI Corporation
ASN
AS2914
Organisation
US flag NTT America Inc.
ASN
AS2497
Organisation
JP flag Internet Initiative Japan Inc.
ASN
AS7660
Organisation
JP flag Asia Pacific Advanced Network Japan
ASN
AS141682
Organisation
AU flag APIDT Infrastructure Pty Ltd

Transit To

ASN
Organisation
ASN
AS2907
Organisation
JP flag Research Organization of Information and Systems National Institute of Informatics
ASN
AS2501
Organisation
JP flag The University of Tokyo
ASN
AS38635
Organisation
JP flag Keio University
ASN
AS17932
Organisation
JP flag Japan Advanced Institute of Science and Technology
ASN
AS9367
Organisation
JP flag Tokyo Institute of Technology
ASN
AS55384
Organisation
JP flag Japan Advanced Institute of Science and Technology
ASN
AS2515
Organisation
JP flag Japan Network Information Center
ASN
AS131158
Organisation
JP flag Nara Institute of Science and Technology National University Corporation
ASN
AS141682
Organisation
AU flag APIDT Infrastructure Pty Ltd
ASN
AS4690
Organisation
JP flag WIDE Project
Showing 10 of 15 Results View More >

Active Prefixes

Prefix
Range From
Range To
Prefix
133.4.128.0/18
Range From
133.4.128.0
Range To
133.4.191.255
Prefix
133.144.0.0/18
Range From
133.144.0.0
Range To
133.144.63.255
Prefix
133.144.64.0/21
Range From
133.144.64.0
Range To
133.144.71.255
Prefix
133.144.80.0/20
Range From
133.144.80.0
Range To
133.144.95.255
Prefix
133.144.96.0/19
Range From
133.144.96.0
Range To
133.144.127.255
Prefix
133.144.128.0/17
Range From
133.144.128.0
Range To
133.144.255.255
Prefix
163.221.0.0/16
Range From
163.221.0.0
Range To
163.221.255.255
Prefix
202.249.0.0/20
Range From
202.249.0.0
Range To
202.249.15.255
Prefix
202.249.16.0/21
Range From
202.249.16.0
Range To
202.249.23.255
Prefix
202.249.26.128/25
Range From
202.249.26.128
Range To
202.249.26.255
Showing 10 of 14 Results View More >