AS26551 — SARGENT-AND-LUNDY

AS26551 announces 1 IPv4 prefixes covering 65,536 addresses and 0 IPv6 prefixes.

About this network

The AS handle SARGENT-AND-LUNDY is held by Sargent & Lundy Engineers.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by reverse DNS entries pointing to host.sargentlundy.com and netnames consistently labeled SLCHICAGO.
• The AS announces 65,536 IPv4 addresses across 12 prefixes with only 3 observed neighbours, a ratio that indicates an internal corporate estate rather than a transit or access network.

Notable

• All registrants for the announced prefixes are listed as Sargent & Lundy Engineers, fully agreeing with the AS holder.
• The address inventory is finely subdivided into 12 distinct prefixes, reflecting site-by-site segmentation typical of a large engineering firm's internal network.

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

Announced prefixes

• 151.154.0.0/16

Upstream networks

• AS2734 CoreSite
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS2734 CoreSite
• AS6461 Zayo Bandwidth
• AS3356 Level 3 Parent, LLC