AS59

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Summary

IP address summary information
Name	University of Wisconsin Madison
Country	United States
Website	host.io/wisc.edu·wisc.edu
Hosted domains	371
IPv4 addresses	331,008
IPv6 addresses	7.92 × 10²⁸
ASN type	Education
Registry	ARIN
Allocated	40 years ago on Jan 21, 1986
Updated	14 years ago on Mar 2, 2012

Ranking

#6,715

Overall rank

among 74,665 networks

Traffic

#3,146

Infrastructure

#13,015

#1,189inUnited States

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

United States
100%

Held location over 90 days: 94%
Held location over 1 year: 97%
Median days between moves: 239 days
Geolocation scope: City

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
72.33.0.0/16	University of Wisconsin Madison	65,536
128.104.0.0/16	University of Wisconsin Madison	65,536
128.105.0.0/16	University of Wisconsin Madison	65,536
144.92.0.0/16	University of Wisconsin Madison	65,536
146.151.0.0/16	University of Wisconsin Madison	65,536
205.213.248.0/22	University of Wisconsin Madison	1,024
192.12.220.0/24	University of Wisconsin Madison	256
192.12.223.0/24	University of Wisconsin Madison	256
192.12.224.0/24	University of Wisconsin Madison	256
192.86.79.0/24	University of Wisconsin Madison	256

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 371 domain names hosted across 132 IP addresses on this ASN.

IP Address	Domain	Count
128.104.80.28		31
128.104.80.14		27
144.92.38.114		21
128.105.7.87		21
128.104.80.25		17

Places

IPs in this network linked to physical places, based on their Wi-Fi networks.

Places IPs116
University115
In Transit1

Category	In AS59	Example IP
University	115	144.92.135.71
In Transit	1	128.104.153.129

New

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Places

Peers

There are 6 peers for this ASN.

ASN	Name	Rank
AS293	ESnet
AS3128	University of Wisconsin System
AS11164	Internet2
AS11537	Internet2
AS19782	Indiana University
AS40387	University of Illinois

Upstreams

There are 1 upstreams for this ASN.

ASN	Name	Rank
AS3128	University of Wisconsin System

Downstreams

There are 0 downstreams for this ASN.

No downstreams found.

Pingable IPs

166 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more

IP Address	ASN	Details
146.151.161.5 Ping	AS59University of Wisconsin Madison	0.52ms from Madison, US
144.92.161.164 Ping	AS59University of Wisconsin Madison	1.41ms from Madison, US
205.213.250.208 Ping	AS59University of Wisconsin Madison	1.28ms from Madison, US
128.104.55.3 Ping	AS59University of Wisconsin Madison	0.56ms from Madison, US
205.213.251.177 Ping	AS59University of Wisconsin Madison	5.56ms from Madison, US
146.151.153.67 Ping	AS59University of Wisconsin Madison	0.66ms from Madison, US
144.92.201.35 Ping	AS59University of Wisconsin Madison	0.60ms from Madison, US
128.105.82.35 Ping	AS59University of Wisconsin Madison	0.39ms from Madison, US
144.92.68.52 Ping	AS59University of Wisconsin Madison	0.42ms from Madison, US
128.104.100.3 Ping	AS59University of Wisconsin Madison	0.41ms from Madison, US

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS59


146.151.164.8	Madison, United States
146.151.164.247	Madison, United States
2607:f388:0:3b3::2	Madison, United States
2607:f388:0:352::2	Madison, United States
146.151.166.46	Madison, United States
144.92.233.237	Madison, United States
128.104.24.130	Madison, United States
144.92.135.70	Madison, United States
128.104.4.130	Madison, United States
2607:f388:0:2200::3	Madison, United States

Important routers in AS59

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.Traceroute →

$ traceroute -a -n -q1 -f3 144.92.108.35

traceroute to 144.92.108.35 (144.92.108.35): 64 hops max, 52 byte packets

3 [] 208.115.136.7 0.427 ms

4 [AS2381] 140.189.9.138 0.625 ms

5 [AS3128] 143.235.42.4 0.866 ms

6 [AS3128] 143.235.33.177 6.04 ms

7 [AS3128] 143.235.33.208 3.45 ms

8 [AS3128] 143.235.33.56 5.707 ms

9 [AS3128] 143.235.41.129 5.823 ms

10 [AS59] 146.151.164.247 5.847 ms

11 [AS59] 144.92.108.35 11.841 ms

Measurement taken from

IPinfo ProbeNet in Chicago, US

On September 10, 2026

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS59 at robtex.

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AS59

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS59

Important routers in AS59

Traceroute

Related Networks

AS1534

AS17097

AS20379

AS210337

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What is an ASN?

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Traceroute

Ranking

IP Ranges

Important routers in AS59

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

Places

AS1534

AS17097

AS20379

AS210337

AS216052

AS26246