University of Wisconsin Madison operates AS59: 12 IPv4 prefixes covering 331,008 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #724 worldwide and #195 of 18,202 networks in United States. That is 0.02% of the country’s IPv4 space.
The largest block is 128.104.0.0 to 128.105.255.255 with 131,072 addresses, geolocated to Madison.
- IPv4 addresses
- 331,008
- IPv4 prefixes
- 12
- World rank
- #724
- Country share
- 0.02%
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 128.104.0.0 Madison131,072
- 146.151.0.0 Madison65,536
- 144.92.0.0 Madison65,536
- 72.33.0.0 Madison65,536
- 205.213.248.0 Milwaukee1,024
- 198.133.224.0 Madison512
- 198.51.246.0 Madison512
- 192.12.223.0 Madison512
Networks of similar size
- AS4818 DiGi Telecommunications Sdn Bhd., Digi Internet Exchange
332,800 - AS2857 Johannes Gutenberg-Universitaet Mainz
332,800 - AS11814 Distributel Communications Limited
332,544 - AS239 University of Toronto331,264
- AS393952 Service Alberta331,008
- AS91 Rensselaer Polytechnic Institute330,496
- AS2715 Fundação Carlos Chagas Filho de Amparo a Pesquisa
330,496 - AS8803 Migros-Genossenschafts-Bund
330,240
IPv4 prefixes
Questions and answers
Who owns AS59?
Autonomous system AS59 is operated by University of Wisconsin Madison.
How many IP addresses does AS59 have?
The network holds 331,008 IPv4 addresses in 12 prefixes, plus 1 IPv6 ranges.
Which country is AS59 in?
The main country is United States.
How big is AS59?
By IPv4 addresses it ranks #724 worldwide.
What is the largest address block of AS59?
128.104.0.0 to 128.105.255.255, 131,072 addresses.