asn.dev

Autonomous system

AS4583 THOMSON-REUTERS

Unclassified ARIN

IPv4 addresses 5.38K 6 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Flagged prefixes 0 none

Summary

West Publishing Corporation (Thomson Reuters)

United States · AI-generated

enterprise legacy

AS4583 (THOMSON-REUTERS) is registered to West Publishing Corporation, the legal-publishing business behind Westlaw and now part of Thomson Reuters. Its main campus is in Eagan, Minnesota.

What it's used for

Corporate and product infrastructure for Thomson Reuters' legal business: the systems and internet-facing services behind its research and publishing platforms, plus staff networks.

Notable

  • Enterprise space belonging to a large information-services company, not a service provider network.
  • The registry keeps the historic West Publishing corporate entity as the holder while the AS handle carries the modern parent's name, which is why lookups on this number can show either brand.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Address space

Summary

Full explorer
CountryNamePrefixes
USUnited States of America6

Registry

Allocation record

via ARIN RDAP
Registry
ARIN
Handle
AS4583
Registry name
THOMSON-REUTERS
Registrant
West Publishing Corporation
Abuse contact
TR.IP-ABUSE@thomsonreuters.com
Registered
1995-05-01
Last changed
2021-10-04
Status
active

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

No IC3 indicators Nothing from the FBI IC3 feed.

Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check