AS25751 — VALUECLICK

Network type: hosting

AS25751 announces 4 IPv4 prefixes covering 1,536 addresses and 3 IPv6 prefixes.

About this network

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.com and netnames like EPSILON-B and LVLT-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.

Announced prefixes

• 64.70.54.0/24
• 64.156.167.0/24
• 159.127.40.0/23
• 205.180.86.0/23
• 2606:ae80:1410::/44
• 2606:ae80:1c10::/44
• 2606:ae80:1c40::/44

Upstream networks

• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS3356 Level 3 Parent, LLC
• AS6461 Zayo Bandwidth
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, United States
• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States