AS33503 — MCW-1-AS

AS33503 announces 1 IPv4 prefixes covering 65,536 addresses and 1 IPv6 prefixes.

About this network

The AS handle MCW-1-AS is held by Medical College of Wisconsin.

What it's used for

• The address space carries internal corporate and academic infrastructure, evidenced by the consistent netname MCW-NET and registrant "Medical College of Wisconsin Information Services" across all listed prefixes.
• The AS announces 65,536 IPv4 addresses across 19 prefixes and 1 IPv6 prefix, while maintaining only 1 observed neighbour. This high address-to-neighbour ratio indicates a self-contained internal estate rather than a transit or access network.

Notable

• All registrants align with the announcer, consistently listing "Medical College of Wisconsin" and its Information Services department.
• The address inventory is finely subdivided into 19 distinct IPv4 prefixes, ranging from a /17 down to /24s, reflecting site-by-site segmentation typical of a large institutional campus.
• The AS was first seen in RIS on 2010-11-24, indicating it has been an active autonomous system for over a decade.

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

Announced prefixes

• 141.106.0.0/16
• 2620:10d::/44

Upstream networks

• AS2381 WiscNet

Adjacent networks

• AS2381 WiscNet