University of Wisconsin Madison
BGP inherited
Cluster stats
Netblocks19
All fragments 55 blocks across 6 clusters
Cluster ID191604856
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 2 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

2 weekly snapshots · JSON
19 0 netblocks since 2026-07-05
2026-07-05 peak 19 2026-07-06

IP Ranges (19)

⬇ export CSV
CIDR Org name Registry Status Confidence
72.33.0.0/16 University of Wisconsin Madison BGP ANNOUNCED ● high
128.104.0.0/16 University of Wisconsin Madison BGP ANNOUNCED ● high
128.105.0.0/16 University of Wisconsin Madison BGP ANNOUNCED ● high
128.105.68.0/23 University of Wisconsin Madison BGP ANNOUNCED ● high
144.92.0.0/16 University of Wisconsin Madison BGP ANNOUNCED ● high
144.92.233.230/32 University of Wisconsin - Madison PEERINGDB ASSIGNED ● high
146.151.0.0/16 University of Wisconsin Madison BGP ANNOUNCED ● high
192.12.220.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
192.12.223.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
192.12.224.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
192.86.79.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
198.51.246.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
198.51.247.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
198.51.254.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
198.133.224.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
198.133.225.0/24 University of Wisconsin Madison BGP ANNOUNCED ● high
205.213.248.0/22 University of Wisconsin Madison BGP ANNOUNCED ● high
2607:f388::/32 University of Wisconsin Madison BGP ANNOUNCED ● high
2607:f388:0:2200::1/128 University of Wisconsin - Madison PEERINGDB ASSIGNED ● high

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (19 of 19)
No discrepancies found among checked blocks.

NIC Handles

AS59 AS59