THOMSON REUTERS CORPORATION

Thomson Reuters (Legal) Inc.
Data as of 2026-07-26
GLEIF verified
Complete entity footprint
2 linked clusters · 45 netblocks · 268,677 IPv4 addresses · 3 IPv6 prefixes
This organisation's clusters combined by evidence — shared GLEIF corporate family — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
549300561UZND4C7B569
Registered name
THOMSON REUTERS CORPORATION
Jurisdiction
CA-ON
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks24 · 194,948 IPv4 addresses
IPv6 2 prefixes (largest 2a00:2381:d288::/48)
Registered in United States (6) · France (4) · Australia (3) · Ukraine (2) · United Kingdom (2) · Germany (1)
All fragments 54 blocks across 6 clusters
Cluster ID213588363
RegistryAFRINIC
Owner jurisdictionCA-ON
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 549300561UZND4C7B569
Shared handles clustered on 30 shared RIR contact/maintainer handles
Registry names 12 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (24)

⬇ export CSV
CIDR Org name Registry Status Confidence
37.71.78.112/29 THOMSON-REUTERS-FRANCE-SA-PUTE RIPE ASSIGNED PA ● low
51.163.34.48/29 THOMSON_REUTERS_GERMANY_GMBH RIPE LEGACY ● low
62.215.130.16/29 Thomson-Reuters RIPE ASSIGNED PA ● low
77.67.20.128/30 THOMSON-REUTERS-GTT RIPE ASSIGNED PA ● low
88.81.238.48/29 THOMSON-REUTERS-DATAGROUP RIPE ASSIGNED PA ● low
88.81.238.56/29 THOMSON-REUTERS-DATAGROUP RIPE ASSIGNED PA ● low
164.57.0.0 – 164.57.191.255 Thomson Reuters (Legal) Inc. ARIN DIRECT ALLOCATION ● low
164.57.224.0/19 Thomson Reuters (Legal) Inc. ARIN DIRECT ALLOCATION ● low
167.68.0.0/16 Thomson Reuters (Legal) Inc. ARIN DIRECT ALLOCATION ● low
170.107.0.0/16 Thomson Reuters Holdings Inc ARIN DIRECT ALLOCATION ● low
185.3.25.144/30 THOMSON-REUTERS RIPE ASSIGNED PA ● low
185.3.25.148/30 THOMSON-REUTERS RIPE ASSIGNED PA ● low
194.88.95.224/27 Thomson-Reuters RIPE ASSIGNED PA ● low
196.192.11.144/29 THOMSON_REUTERS AFRINIC ASSIGNED PA ● low
202.27.91.0/24 Thomson Reuters (Professional) Australia Limited APNIC ASSIGNED PORTABLE ● low
202.69.208.0/20 Thomson Reuters (Professional) Australia Limited APNIC ALLOCATED PORTABLE ● low
203.13.166.0/24 Thomson Reuters (Professional) Australia Limited APNIC ASSIGNED PORTABLE ● low
203.191.132.0/24 Thomson Reuters (Professional) Australia Limited APNIC ASSIGNED PORTABLE ● low
204.154.88.0 – 204.154.93.255 Thomson Reuters (Legal) Inc. ARIN DIRECT ALLOCATION ● low
217.69.27.64/28 Thomson-reuters RIPE ASSIGNED PA ● low
217.79.213.152/29 THOMSON_REUTERS_GERMANY_GMBH RIPE ASSIGNED PA ● low
219.143.209.224/28 Thomson-Reuters APNIC ASSIGNED NON-PORTABLE ● low
2a00:2381:d288::/48 THOMSON-REUTERS RIPE AGGREGATED-BY-LIR ● low
2a00:2381:f942::/48 THOMSON-REUTERS RIPE AGGREGATED-BY-LIR ● low

IPv6 ranges (2)

CIDR
2a00:2381:d288::/48
2a00:2381:f942::/48

Domains hosted in this network

what's this?
westlaw.com riag.com thomsonreuters.com

Corporate group (2 confirmed entities)

Network trust

what's this?
RPKI hygiene: C how networks compare →
58.3% of checked blocks have valid RPKI ROA coverage (14 of 24)
Possible discrepancies (2)

These blocks are registered to Thomson Reuters (Legal) Inc. but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a00:2381:f942::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:d288::/48 /48 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AB34802-RIPE APNIC-HM AS3257-IPAM-MNT ASN3326-MNT AT1334-AP BTNET-MNT CK940-AP CK940-AP DUMY-RIPE DUMY-RIPE EQUINIX-FULFIL-MNT EQUINIX-MNT +18 more