ASN Lookup – Networks, Upstreams and Prefixes

AS103

ASN

ARIN

RIR

IPv4 Prefixes

IPv6 Prefixes

AS Information

ASNAS103

NameNWU-AS

OrganisationNorthwestern University

Country –

RIRARIN

Allocated09.04.1987

Abuse contactsecurity@northwestern.edu

Network Overview

IPv4 Prefixes28

IPv6 Prefixes1

Upstreams IPv49

BGP Peers IPv40

Upstreams (Transit Providers)

IPv4

AS11164 INTERNET2-I2PX

AS11537 INTERNET2-RESEARCH-EDU

AS174 COGENT-174

AS22335 MREN

AS2381 WISCNET1-AS

AS293 ESNET

AS33491 COMCAST-33491

AS3356 LEVEL3

AS396450 INTERNET2-2

IPv4 Prefixes (28 total, showing 20)

165.124.128.0/19

199.249.165.0/24

165.124.192.0/19

199.249.166.0/23

8.28.178.0/23

192.26.86.0/23

192.26.85.0/24

8.30.248.0/22

165.124.149.0/24

165.124.184.0/23

165.124.0.0/17

165.124.160.0/20

192.31.253.0/24

129.105.0.0/16

38.124.97.0/24

199.74.64.0/18

165.124.176.0/21

199.249.168.0/23

199.249.166.0/24

199.249.167.0/24

IPv6 Prefixes (1 total)

2620:10d:2000::/41

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.