AS19606 — NLSNMEDIA

AS19606 announces 5 IPv4 prefixes covering 2,560 addresses and 0 IPv6 prefixes.

About this network

NLSNMEDIA is the autonomous system for The Nielsen Company (US), LLC.

What it's used for

• The address space carries corporate infrastructure, evidenced by the reverse DNS record ws1.nielsen.com and netnames such as NLSNMEDIA and NUL-18.
• The AS announces 2560 IPv4 addresses across 5 prefixes and maintains 4 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access provider.

Notable

• Registrants for all announced prefixes align with the announcer, listing The Nielsen Company or THE NIELSEN COMPANY (US), LLC.
• The address inventory is finely subdivided into five distinct blocks, including a /22 and multiple /23 and /24 prefixes, indicating site-by-site segmentation of the corporate network.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 162.33.64.0/24
• 206.113.192.0/23
• 208.64.96.0/23
• 208.64.99.0/24
• 209.242.88.0/22

Upstream networks

• AS701 Verizon Business
• AS3356 Level 3 Parent, LLC
• AS33363 Charter Communications, Inc
• AS62 CyrusOne LLC

Adjacent networks

• AS701 Verizon Business
• AS3356 Level 3 Parent, LLC
• AS33363 Charter Communications, Inc
• AS62 CyrusOne LLC

Routing security

• RPKI: 0 valid, 0 invalid and 9 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 33% of announcements registered; 15 route objects.
• Listed in as-sets: AS-C1, AS-CHTR-SYNC, AS-HURRICANE, AS-RR-BIZ, AS-XO-B.