AS3128 University of Wisconsin System 🇺🇸 US
Announcing 13 prefixes, seen at the RIS collectors.
IPv4 prefixes
12
656,640 (2,565 × /24)
IPv6 prefixes
1
16 × /32
Upstreams
6
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
6
transit customers observed
Customer cone
8
ASes reachable through it
Registry and operator data
- AS number
- AS3128
- Name
- University of Wisconsin System
- Organisation
- University of Wisconsin System
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 1993-11-17
- Network type
- Educational/Research
- Traffic levels
- 100-200Gbps
- Scope
- Regional
- Peering policy
- Open
- IRR as-set
- AS-UWSYSNET
- Website
- https://www.wisconsin.edu
- Looking glass
- https://stats.uwsys.net
- PeeringDB
- net/6982
- Exchanges
- 3
- Facilities
- 4
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
13 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 131.210.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 137.81.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 137.104.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 138.49.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 138.49.160.0/22 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 139.225.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 141.233.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 143.200.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 143.235.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 143.236.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 144.13.0.0/16 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 192.35.81.0/24 v4 | RPKI valid | 48 | 70183128 | 2026-09-18 |
| 2600:1d00::/28 v6 | RPKI valid | 39 | 69393128 | 2026-09-18 |