AS59 — WISC-MADISON-AS - University of Wisconsin Madison

AS59 announces 25 IPv4 prefixes covering 331,004 addresses and 1 IPv6 prefixes.

About this network

An early low-numbered allocation (WISC-MADISON-AS) serving the University of Wisconsin-Madison.

What it's used for

• Campus, research, and administrative networking for UW-Madison and its labs.

Notable

• Institutional address space, not commercial hosting.
• A two-digit AS number places UW-Madison among the internet's earliest participants.

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

Announced prefixes

• 72.33.0.0/16
• 128.104.0.0/15
• 144.92.0.0/17
• 144.92.128.0/18
• 144.92.192.0/19
• 144.92.224.0/21
• 144.92.232.0/24
• 144.92.233.0/26
• 144.92.233.64/27
• 144.92.233.96/28
• 144.92.233.112/30
• 144.92.233.120/29
• 144.92.233.128/25
• 144.92.234.0/23
• 144.92.236.0/22
• 144.92.240.0/20
• 146.151.0.0/16
• 192.12.220.0/24
• 192.12.223.0/24
• 192.12.224.0/24
• 192.86.79.0/24
• 198.51.246.0/23
• 198.51.254.0/24
• 198.133.224.0/23
• 205.213.248.0/22
• 2607:f388::/32

Upstream networks

• AS3128 University of Wisconsin System
• AS11164 Internet2
• AS11537 Internet2
• AS293 ESnet

Adjacent networks

• AS3128 University of Wisconsin System
• AS11164 Internet2
• AS11537 Internet2
• AS293 ESnet

Routing security

• RPKI: 17 valid, 0 invalid and 0 not-found announcements; 16 ROAs.
• ASPA: none published.
• IRR: 94% of announcements registered; 16 route objects.
• Listed in as-sets: AS-HURRICANE, AS-HURRICANEV6, AS-STARTAPCA, AS-STARTAPCN, AS-STARTAPEU, AS-STARTAPLA, AS-STARTAPME, AS-STARTAPRU, AS-UWSYSNET, AS-WISCNET-WRIPS, AS-ZENEDGE, AS11164:AS-PARTICIPANTS, AS11537:AS-PARTICIPANTS, AS11537:AS-PARTICIPANTS-BETA, AS198949:AS-SD, AS293:AS-FROM-I2-TO-ESNET, AS3128:AS-ALL, AS3676:AS-UIOWA-PEERS-ANNOUNCE-CUST.