Data as of Nov 6, 2026
Autonomous system

AS28939

ARM Ltd

Announces 3,584 addresses in 14 prefixes. None of it is anonymizer space.

Type
Business
GB

Announced prefixes

Arrived
PrefixTypeRPKI
217.140.96.0/24
since Feb 2020
Business
217.140.97.0/24
since Sep 2008
Business
217.140.99.0/24
since Jun 2018
Business
217.140.100.0/24
since Feb 2009
Business
217.140.101.0/24
since Dec 2023
Business
217.140.102.0/24
since Feb 2014
Business
217.140.103.0/24
since Jan 2009
Business
217.140.104.0/24
since Mar 2014
Business
217.140.106.0/24
since Jun 2018
Business
217.140.107.0/24
since Aug 2025
Business
217.140.108.0/24
since Mar 2025
Business
217.140.109.0/24
since Jun 2018
Business
217.140.110.0/24
since Nov 2016
Business
217.140.111.0/24
since Aug 2009
Business

Network & history

Routing patterns

How its announcements have moved

Arrivals

Year each prefix's current origin began announcing it