AS3128
Educational/Research
BRUWS-AS3128
University of Wisconsin System
US
13
IPv4 Prefixes
1
IPv6 Prefixes
0
peering network
3
IX Points
4
Facilities
AS Name
UWSysNet
Organization
University of Wisconsin-Madison
Country/Region
US
Registration Date
[email protected] 20190821
Update Date
2026-04-03T13:57:56Z
IPv4 Prefixes (13)
192.35.81.0/24
146.151.3.0/24
137.104.0.0/16
143.235.0.0/16
144.13.0.0/16
138.49.160.0/22
143.200.0.0/16
131.210.0.0/16
143.236.0.0/16
137.81.0.0/16
141.233.0.0/16
138.49.0.0/16
139.225.0.0/16
IPv6 Prefixes (1)
2600:1d00::/28
AS3128 network topology
(Upstream/Downstream)
Facility List (4)
| Name | City | Country |
|---|---|---|
| Network 222 | Madison | US |
| University of Wisconsin-Madison | Madison | US |
| Northwestern University co-location facility | Chicago | US |
| Level(3) Chicago (Kingsbury) | Chicago | US |
Colocated Networks (Shared Data Center)
| ASN | Name | Type | Shared Facility |
|---|---|---|---|
| AS2381 | WiscNet | Educational/Research | 4/4 |
| AS59 | University of Wisconsin - Madison | Educational/Research | 4/4 |
| AS2698 | Iowa State University | Educational/Research | 3/4 |
| AS40387 | University of Illinois/ICCN | Educational/Research | 2/4 |
| AS11537 | UCAID | Educational/Research | 2/4 |
| AS4150 | SupraNet Communications | Cable/DSL/ISP | 2/4 |
| AS3676 | University of Iowa | Educational/Research | 2/4 |
| AS293 | Energy Sciences Network (ESnet) | Educational/Research | 2/4 |
| AS237 | Merit Network | Educational/Research | 2/4 |
| AS160 | University of Chicago | Educational/Research | 2/4 |
| AS57 | Northern Lights GigaPOP | Educational/Research | 2/4 |
| AS398900 | RENCI-FABRIC | 1/4 | |
| AS396850 | Illinois Rural Healthnet | Non-Profit | 1/4 |
| AS62523 | CIRBN | Cable/DSL/ISP | 1/4 |
| AS53597 | Hoyos Consulting | NSP | 1/4 |
| AS51747 | Internet Vikings International | NSP | 1/4 |
| AS32003 | LiteWire Internet Services | Cable/DSL/ISP | 1/4 |
| AS30162 | Ethoplex | Cable/DSL/ISP | 1/4 |
| AS26785 | Netwurx | Cable/DSL/ISP | 1/4 |
| AS20130 | DePaul University | Educational/Research | 1/4 |
| AS19782 | Indiana GigaPOP | Educational/Research | 1/4 |
| AS18683 | Midwest Fiber Networks | NSP | 1/4 |
| AS17579 | Korea Institute of Science and Technology Information | Educational/Research | 1/4 |
| AS16842 | 5NINES, LLC | Cable/DSL/ISP | 1/4 |
| AS11796 | WIN Technology | Cable/DSL/ISP | 1/4 |
| AS9264 | Academia Sinica Network(ASNet) | Educational/Research | 1/4 |
| AS7922 | Comcast | Cable/DSL/ISP | 1/4 |
| AS7386 | Illinois State University | Educational/Research | 1/4 |
| AS5683 | Mad City Broadband | Cable/DSL/ISP | 1/4 |
| AS4181 | TDS Telecom | Cable/DSL/ISP | 1/4 |
Raw Whois Data
aut-num: AS3128 as-name: UWSysNet descr: University of Wisconsin-Madison mnt-by: MNT-BRUWS export: to AS-ANY announce AS-UWSYSNET changed: [email protected] 20190821 source: ARIN aut-num: AS3128 as-name: UWSysNet descr: UWSysNet export: to AS-ANY announce AS-UWSYSNET admin-c: DUMMY-RADB tech-c: DUMMY-RADB mnt-by: MAINT-AS3128 changed: [email protected] 20210726 #18:24:22Z source: RADB last-modified: 2026-04-03T13:57:56Z --- ARIN Whois --- # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # ASNumber: 3128 ASName: BRUWS-AS3128 ASHandle: AS3128 RegDate: 1993-11-17 Updated: 2018-03-07 Ref: https://rdap.arin.net/registry/autnum/3128 OrgName: University of Wisconsin System OrgId: BRUWS Address: 1220 Linden Drive City: Madison StateProv: WI PostalCode: 53705 Country: US RegDate: 2014-04-16 Updated: 2022-09-26 Ref: https://rdap.arin.net/registry/entity/BRUWS OrgTechHandle: NOC31830-ARIN OrgTechName: Network Operations Center OrgTechPhone: +1-608-262-9030 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/NOC31830-ARIN OrgDNSHandle: UWSNH-ARIN OrgDNSName: University of Wisconsin System Network Hostmaster OrgDNSPhone: +1-608-263-4188 OrgDNSEmail: [email protected] OrgDNSRef: https://rdap.arin.net/registry/entity/UWSNH-ARIN OrgAbuseHandle: NOC31830-ARIN OrgAbuseName: Network Operations Center OrgAbusePhone: +1-608-262-9030 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/NOC31830-ARIN OrgRoutingHandle: NOC31830-ARIN OrgRoutingName: Network Operations Center OrgRoutingPhone: +1-608-262-9030 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/NOC31830-ARIN OrgNOCHandle: NOC31830-ARIN OrgNOCName: Network Operations Center OrgNOCPhone: +1-608-262-9030 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/NOC31830-ARIN OrgTechHandle: MHA260-ARIN OrgTechName: Hare, Michael OrgTechPhone: +1-608-262-5236 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/MHA260-ARIN # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. #