AS number details

AS103

Northwestern University  ·  northwestern.edu

United States

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS103 – Northwestern University

Field Value
Country United States
Website northwestern.edu
Hosted domains 185
Number of IPv4 149,504
Number of IPv6 154,742,504,910,672,534,362,390,528
ASN type Education
Registry arin
Allocated 38 years ago on Apr 09, 1987
Updated 13 years ago on Apr 02, 2012

IP Ranges

Netblock Company Num of IPs
129.105.0.0/16 Northwestern University 65,536
165.124.0.0/17 Northwestern University 32,768
199.74.64.0/18 Northwestern University 16,384
165.124.128.0/19 Northwestern University 8,192
165.124.192.0/19 Northwestern University 8,192
165.124.160.0/20 Northwestern University 4,096
165.124.240.0/20 Northwestern University 4,096
165.124.176.0/21 Northwestern University 2,048
165.124.224.0/21 Northwestern University 2,048
165.124.232.0/22 Northwestern University 1,024
8.30.248.0/22 Level 3 Parent, LLC 1,024
165.124.184.0/23 Northwestern University 512
192.26.86.0/23 Northwestern University 512
199.249.166.0/23 Northwestern University 512
199.249.168.0/23 Northwestern University 512
8.28.178.0/23 Northwestern University 512
165.124.17.0/24 Northwestern University 256
165.124.186.0/24 Northwestern University 256
192.26.85.0/24 Northwestern University 256
192.31.253.0/24 Northwestern University 256
192.5.143.0/24 Northwestern University 256
199.249.165.0/24 Northwestern University 256
199.249.166.0/24 Northwestern University 256
199.249.167.0/24 Northwestern University 256
199.249.168.0/24 Northwestern University 256
199.249.169.0/24 Northwestern University 256
38.124.97.0/24 Northwestern University 256

Netblock Company
2620:10d:2000::/41 Northwestern University
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view whois details › 

                                                ASHandle:       AS103
                                                OrgID:          AS103
                                                ASName:         AS103
                                                ASNumber:       AS103
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's Whois product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP Whois API IP Whois Database Download

Hosted Domains

There are 185 domain names hosted across 71 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
129.105.136.48 ██████████ 27
165.124.147.150 ██████████ 23
165.124.248.37 ██████████ 18
165.124.149.20 ██████████ 8
129.105.193.208 ██████████ 8
129.105.44.20 ██████████ 6
165.124.83.50 ██████████ 6
129.105.229.66 ██████████ 5
165.124.149.110 ██████████ 4
165.124.83.120 ██████████ 4

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API Hosted Domains Database Download

Peers

There are 10 peers for this ASN.

Peers Name
AS11164 Internet2
AS174 Cogent Communications
AS19782 Indiana University
AS22335 Metropolitan Research and Education Network
AS2381 WiscNet
AS293 ESnet
AS33491 Comcast Cable Communications, LLC
AS3356 Level 3 Parent, LLC
AS396450 Internet2
AS40387 University of Illinois
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Upstreams

There are 5 upstreams for this ASN.

upstreams Name
AS174 Cogent Communications
AS2381 WiscNet
AS33491 Comcast Cable Communications, LLC
AS3356 Level 3 Parent, LLC
AS396450 Internet2
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Downstreams

There are no downstreams for this ASN.

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
165.124.147.67 AS103 Northwestern University 1.14ms from Chicago, US
129.105.243.1 AS103 Northwestern University 1.48ms from Chicago, US
129.105.253.139 AS103 Northwestern University 1.13ms from Chicago, US
129.105.158.69 AS103 Northwestern University 1.34ms from Chicago, US
165.124.231.176 AS103 Northwestern University 1.94ms from Chicago, US
129.105.125.129 AS103 Northwestern University 1.41ms from Chicago, US
165.124.51.136 AS103 Northwestern University 1.17ms from Chicago, US
165.124.28.250 AS103 Northwestern University 1.11ms from Chicago, US
129.105.131.195 AS103 Northwestern University 1.42ms from Chicago, US
129.105.123.131 AS103 Northwestern University 1.45ms from Chicago, US
129.105.143.227 AS103 Northwestern University 1.39ms from Chicago, US
165.124.134.254 AS103 Northwestern University 1.10ms from Chicago, US
129.105.223.62 AS103 Northwestern University 1.31ms from Chicago, US
129.105.46.218 AS103 Northwestern University 1.06ms from Chicago, US
129.105.82.218 AS103 Northwestern University 1.38ms from Chicago, US
165.124.185.152 AS103 Northwestern University 1.31ms from Chicago, US
129.105.12.131 AS103 Northwestern University 1.41ms from Chicago, US
129.105.1.9 AS103 Northwestern University 1.28ms from Chicago, US
129.105.87.33 AS103 Northwestern University 1.37ms from Chicago, US
129.105.175.129 AS103 Northwestern University 1.42ms from Chicago, US
192.5.143.33 AS103 Northwestern University 0.43ms from Chicago, US
129.105.36.50 AS103 Northwestern University 1.33ms from Chicago, US
165.124.24.81 AS103 Northwestern University 1.11ms from Chicago, US
165.124.91.62 AS103 Northwestern University 1.13ms from Chicago, US
165.124.52.129 AS103 Northwestern University 1.44ms from Chicago, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
89.200.80.199 AS1136 KPN B.V. 14.13ms from Amsterdam, NL
82.173.119.199 AS13127 Odido Netherlands B.V. 15.61ms from Amsterdam, NL
207.113.159.119 AS13428 Surf Air Wireless, LLC 1.25ms from Chicago, US
205.221.67.215 AS6122 Iowa Communications Network 11.74ms from Chicago, US
187.95.214.7 AS270626 DOMINION UAULL NET TEC DE CON INTELIGENTES LTDA 7.79ms from Curitiba, BR
177.201.156.199 AS8167 V tal 12.51ms from Curitiba, BR
1.158.188.71 AS1221 Telstra Limited 11.19ms from Melbourne, AU
18.229.165.231 AS16509 Amazon.com, Inc. 0.14ms from Osasco, BR
23.205.231.119 AS16625 Akamai Technologies, Inc. 0.14ms from Osasco, BR
176.135.166.231 AS5410 Bouygues Telecom SA 2.34ms from Paris, FR
134.209.141.39 AS14061 DigitalOcean, LLC 0.18ms from San Jose, US
187.51.188.247 AS10429 TELEFÔNICA BRASIL S.A 1.09ms from Sao Paulo, BR
183.96.227.7 AS4766 Korea Telecom 1.17ms from Seoul, KR
14.57.13.199 AS4766 Korea Telecom 1.64ms from Seoul, KR
130.244.161.23 AS1257 Tele2 Sverige AB 1.90ms from Stockholm, SE
61.223.138.71 AS3462 Data Communication Business Group 2.38ms from Taichung, TW
86.99.5.183 AS5384 Emirates Internet 3.62ms from Al Fujairah City, AE
185.42.10.71 AS199939 KeenSystems B.V. 0.37ms from Amsterdam, NL
148.170.121.39 AS19331 Twin Lakes Telephone Cooperative Corporation 9.11ms from Atlanta, US
84.159.209.231 AS3320 Deutsche Telekom AG 7.19ms from Berlin, DE
174.106.147.71 AS11426 Charter Communications Inc 12.95ms from Charlotte, US
202.86.103.7 AS18021 Unisys NZ, IT Outsourcer, 6.07ms from Christchurch, NZ
181.91.79.7 AS7303 Telecom Argentina S.A. 9.93ms from Cordoba, AR
91.12.105.135 AS3320 Deutsche Telekom AG 7.07ms from Frankfurt am Main, DE
90.215.40.183 AS5607 Sky UK Limited 1.84ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 -f2 -m11 129.105.15.156
traceroute to 129.105.15.156 (129.105.15.156): 11 hops max, 52 byte packets
2 [] 206.71.12.20 0.932 ms
3 *
4 *
5 [AS6939] 184.105.81.151 13.637 ms
6 *
7 *
8 [AS103] 192.5.143.38 28.292 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Atlanta, US
On

Related Networks

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 AS103 at robtex.

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

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs