AS28939
ARM Ltd
AS28939 is ARM Ltd (arm.com). It announces 3,584 IPv4 addresses in 14 prefixes, and 0 IPv6 prefixes.
United Kingdom· RIPE NCC· allocated 2003-04-14· Business
3,584
IPv4 addresses announced
14
IPv4 prefixes
0
IPv6 prefixes
7.14%
of its routes RPKI-valid
3,584
of its IPv4 geolocated
4
countries
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United Kingdom1,536 · 42.86%
- United States1,536 · 42.86%
- India256 · 7.14%
- Japan256 · 7.14%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ARM-AS
- name
- ARM Ltd
- org
- ORG-AL29-RIPE
- org name
- ARM Ltd
- org address
- 110 FULBORN ROAD, CB1 9NJ, CAMBRIDGE, UNITED KINGDOM
- org country
- GB
- country
- GB
- source
- ripe
- status
- ASSIGNED
- created
- 2003-04-14
- updated
- 2021-02-23
- maintainer
- RIPE-NCC-END-MNT|MNT-ARM
- abuse name
- Abuse-C Role
- abuse email
- hostmaster@arm.com
- abuse kind
- role
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 217.140.96.0/24 | United Kingdom | Not found | 17 | 2026-10-02 |
| 217.140.97.0/24 | United Kingdom | Not found | 17 | 2026-10-02 |
| 217.140.99.0/24 | United Kingdom | Not found | 17 | 2026-10-02 |
| 217.140.100.0/24 | United States | Not found | 17 | 2026-10-02 |
| 217.140.101.0/24 | United States | Not found | 17 | 2026-10-02 |
| 217.140.102.0/24 | United States | Not found | 17 | 2026-10-02 |
| 217.140.103.0/24 | United States | Not found | 17 | 2026-10-02 |
| 217.140.104.0/24 | Japan | Not found | 17 | 2026-10-02 |
| 217.140.106.0/24 | United Kingdom | Not found | 17 | 2026-10-02 |
| 217.140.107.0/24 | United Kingdom | Not found | 17 | 2026-10-02 |
| 217.140.108.0/24 | India | Valid | 17 | 2026-10-02 |
| 217.140.109.0/24 | United Kingdom | Not found | 17 | 2026-10-02 |
| 217.140.110.0/24 | United States | Not found | 17 | 2026-10-02 |
| 217.140.111.0/24 | United States | Not found | 17 | 2026-10-02 |
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