Autonomous system
AS25751 VALUECLICK
Hosting ARIN Content
Summary
Conversant
adtech business media
The AS handle VALUECLICK is held by Conversant, Inc.
What it's used for
- The address space carries corporate infrastructure for a digital advertising technology company, evidenced by the reverse DNS record
et5-1.rtr-edge1.sjc.conversantmedia.comand netnames likeEPSILON-BandLVLT-VALUEC-5-64-156-167. - The AS announces 1536 IPv4 addresses across 4 prefixes and 3 IPv6 prefixes, while maintaining 21 observed neighbours; this ratio of limited address space against a moderate number of peers suggests a business network with specific peering requirements rather than a large-scale transit provider.
Notable
- Registrants vary across the inventory, including Conversant, LLC, Level 3 Parent, LLC, and CenturyLink Communications, LLC, reflecting a history of acquisitions and address space consolidation.
- The operator has undergone significant corporate evolution, having been known by several names including ValueClick, Commission Junction, FastClick, Dotomi, and Mediaplex before consolidating under the Conversant brand.
- The inventory consists of four distinct IPv4 blocks, with the largest being a /23 prefix, indicating a segmented corporate estate rather than a contiguous block.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.237.159 |
| Equinix Internet Exchange San Jose (Bay Area) | San Jose, United States | 206.223.116.46 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 1.54K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS25751- Registry name
- VALUECLICK
- Registrant
- Conversant, Inc.
- Abuse contact
- abuse@conversantmedia.com
- Registered
- 2002-05-01
- Last changed
- 2026-06-05
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Conversant US-West
- Also known as
- Mediaplex, Commission Junction, FastClick, Dotomi, ValueClick, SET.tv, 41041, 26762, 19834, 399104
- Network type
- Content
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
RADB::AS-CNVR- Present at
- 1 exchanges
- Facilities
- 2 facilities
- Website
- https://www.conversantmedia.com/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 17 with no ROA
- ROAs
- 0 authorising AS25751
- ASPA
- no ASPA record
- IRR
- 100% registered · 17 of 17 announcements
- Route objects
- 23 naming AS25751
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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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