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ASN Lookup Tool
AS4583 THOMSON-REUTERS

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS4583
Organisation
West Publishing Corporation
Name
THOMSON-REUTERS
Total IPv4 Addresses
197120
Total IPv4 Prefixes
33
Total IPv6 Prefixes
0
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#1,145 out of 77,325
Registry
Arin
Registered Country
US flag US
Registered Country Name
United States of America (the)
Registered Date
1995-05-01
Registration Last Change
2021-10-04
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
AS399616
US flagThomson Reuters U.S. LLC
AS7018
US flagAT&T Services, Inc.
AS3356
US flagLevel 3 Parent, LLC
AS2686
US flagAT&T Corp.
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

Prefix155.46.132.0/23
Range From155.46.132.0
Range To155.46.133.255
Prefix155.46.136.0/22
Range From155.46.136.0
Range To155.46.139.255
Prefix155.46.140.0/22
Range From155.46.140.0
Range To155.46.143.255
Prefix155.46.144.0/22
Range From155.46.144.0
Range To155.46.147.255
Prefix155.46.148.0/22
Range From155.46.148.0
Range To155.46.151.255
Showing 5 of 33
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.