Autonomous system
AS26667 RUBICONPROJECT
Hosting ARIN
Summary
Magnite
adtech business enterprise
The AS handle RUBICONPROJECT is held by Magnite, Inc.
What it's used for
- The address space carries internal corporate infrastructure, evidenced by netnames such as
MAGNITE-SJC4-1andADMONregistered to Magnite, Inc. - The inventory consists of 23,296 IPv4 addresses across 7 prefixes and 3 IPv6 prefixes, with 151 observed neighbours, indicating a business network with significant peering relationships.
Notable
- Registrants align with the announcer, primarily listed as Magnite, Inc., with one prefix registered to ADMON.
- The operator was formerly known as The Rubicon Project before rebranding to Magnite.
- The address inventory is finely subdivided into multiple /22 and /24 blocks, consistent with site-by-site segmentation for an internal corporate estate.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 9 exchanges in 4 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.193.126 |
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.212.237 |
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.119.7 |
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.229.135 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.164 |
| Coresite - Any2 West | Los Angeles, United States | 206.72.210.103 |
| Any2 California | Los Angeles, United States | 206.72.210.103 |
| Equinix Internet Exchange San Jose (Bay Area) | San Jose, United States | 206.223.116.40 |
Transit providers
36 upstream, 0 downstream and 53 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 23.30K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 10 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS26667- Registry name
- RUBICONPROJECT
- Registrant
- Magnite, Inc.
- Abuse contact
- arin@magnite.com
- Registered
- 2007-11-08
- Last changed
- 2014-11-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 6% valid · 1 valid, 17 with no ROA
- ROAs
- 9 authorising AS26667
- ASPA
- no ASPA record
- IRR
- 100% registered · 18 of 18 announcements
- Route objects
- 38 naming AS26667
Reputation
Classification and threat
Hosting Datacenter or cloud provider. Addresses are servers, not people.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere