ASN Lookup – Networks, Upstreams and Prefixes

AS59

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS59

NameWISC-MADISON-AS

OrganisationUniversity of Wisconsin Madison

Country –

RIRARIN

Allocated21.01.1986

Network Overview

IPv4 Prefixes15

IPv6 Prefixes1

Upstreams IPv43

BGP Peers IPv40

Upstreams (Transit Providers)

IPv4

AS11537 INTERNET2-RESEARCH-EDU

AS293 ESNET

AS3128 BRUWS-AS3128

IPv4 Prefixes (15 total)

198.133.224.0/24

72.33.0.0/16

128.104.0.0/16

144.92.0.0/16

192.86.79.0/24

205.213.248.0/22

146.151.0.0/16

198.51.246.0/24

192.12.224.0/24

198.133.225.0/24

192.12.223.0/24

192.12.220.0/24

128.105.0.0/16

198.51.254.0/24

198.51.247.0/24

IPv6 Prefixes (1 total)

2607:f388::/32

My IP ASN Lookup IP Lookup WHOIS DNS Lookup

What is an ASN?

An Autonomous System Number (ASN) is a unique number assigned to a network on the internet. Upstreams are the transit providers through which the AS reaches the internet. Peers are networks with which direct traffic exchange takes place. Prefixes are the IP address ranges that the AS announces to the internet. Data via RIPE NCC RDAP and RIPEstat API.