AS3128
🇺🇸BRUWS-AS3128 - University of Wisconsin System2487a5c1b756d9ae2c79bd284859dd42
ARINassigned
Announced Prefixes (BGP)
13total
12 IPv41 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)590,080
Announced (BGP)656,640
IPv6 Addresses ⓘ
Allocated (RIR)1.2×10^30
Announced (BGP)1.2×10^30
Prefix Limit (IPv4)
1,000
Prefix Limit (IPv6)
5
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
11/17/1993
Announced Prefixes
(BGP)13|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | ARIN | 5/18/2026 | |
| Valid | ARIN | 5/18/2026 | |
| Valid | ARIN | 5/18/2026 | |
| No ROA | RADB | 5/18/2026 | |
| No ROA | — | 5/18/2026 | |
| No ROA | RADB | 5/18/2026 | |
| Valid | ARIN | 5/18/2026 | |
| Valid | ARIN | 5/18/2026 | |
| Valid | ARIN | 5/18/2026 | |
| Valid | ARIN | 5/18/2026 |
1–10 of 13
1 / 2
Allocated Prefixes
(RIR)11Prefix | Country | RIR | Status |
|---|---|---|---|
| 131.210.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 137.81.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 137.104.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 138.49.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 139.225.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 141.233.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 143.200.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 143.235.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 143.236.0.0/16 | 🇺🇸 US | ARIN | allocated |
| 192.35.81.0/24 | 🇺🇸 US | ARIN | allocated |
1–10 of 11
1 / 2
ASPA
No ASPA
External Links
API
Open https://api.ipctl.io/v1/asn/3128Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/3128" | jq