Autonomous System
AS3128 University of Wisconsin System
EducationActiveUnited StatesARIN
AS3128 (BRUWS-AS3128) is an education network operated by University of Wisconsin System in United States, registered with ARIN. It has 12 IPv4 prefixes with 656,640 addresses and 1 IPv6 prefix, which makes it the 575th largest of 82,141 active autonomous systems by IPv4 space.
IPv4 addresses656,640in 12 prefixes
IPv6 prefixes1≈ 1.3 × 10³⁰ addresses
Size rank#575of 82,141 active ASNs
Details
OrganizationUniversity of Wisconsin System
AS nameBRUWS-AS3128
Websitewisconsin.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactnoc@uwsys.net
Registered1993-11-17
Last updated2018-03-07
IPv4 prefixes
12 prefixes · 656,640 addresses| Network | Addresses | First – last address |
|---|---|---|
| 131.210.0.0/16 | 65,536 | 131.210.0.0 – 131.210.255.255 |
| 137.81.0.0/16 | 65,536 | 137.81.0.0 – 137.81.255.255 |
| 137.104.0.0/16 | 65,536 | 137.104.0.0 – 137.104.255.255 |
| 138.49.0.0/16 | 65,536 | 138.49.0.0 – 138.49.255.255 |
| 139.225.0.0/16 | 65,536 | 139.225.0.0 – 139.225.255.255 |
| 141.233.0.0/16 | 65,536 | 141.233.0.0 – 141.233.255.255 |
| 143.200.0.0/16 | 65,536 | 143.200.0.0 – 143.200.255.255 |
| 143.235.0.0/16 | 65,536 | 143.235.0.0 – 143.235.255.255 |
| 143.236.0.0/16 | 65,536 | 143.236.0.0 – 143.236.255.255 |
| 144.13.0.0/16 | 65,536 | 144.13.0.0 – 144.13.255.255 |
| 138.49.160.0/22 | 1,024 | 138.49.160.0 – 138.49.163.255 |
| 192.35.81.0/24 | 256 | 192.35.81.0 – 192.35.81.255 |
131.210.0.0/16 137.81.0.0/16 137.104.0.0/16 138.49.0.0/16 139.225.0.0/16 141.233.0.0/16 143.200.0.0/16 143.235.0.0/16 143.236.0.0/16 144.13.0.0/16 138.49.160.0/22 192.35.81.0/24
IPv6 prefixes
1 prefix- 2600:1d00::/28
2600:1d00::/28
Query AS3128 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS3128&key=YOUR_API_KEY"Any address in its prefixes resolves to AS3128, with or without a key:
curl "https://api.ipapi.is/?q=131.210.0.1"Largest networks in United States
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