Autonomous System 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 160
IPv4 addresses 149,504
IPv6 addresses 154,742,504,910,672,534,362,390,528
ASN type Education
Registry arin
Allocated 39 years ago on Apr 09, 1987
Updated 14 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
8.30.248.0/22 Level 3 Parent, LLC 1,024
165.124.232.0/22 Northwestern University 1,024
8.28.178.0/23 Northwestern University 512
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
38.124.97.0/24 Northwestern University 256
165.124.17.0/24 Northwestern University 256
165.124.149.0/24 Northwestern University 256
165.124.186.0/24 Northwestern University 256
192.5.143.0/24 Northwestern University 256
192.26.85.0/24 Northwestern University 256
192.31.253.0/24 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

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 & Database

Hosted Domains

There are 160 domain names hosted across 65 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
129.105.136.48 ██████████ 30
165.124.248.37 ██████████ 17
129.105.193.208 ██████████ 8
165.124.149.20 ██████████ 8
165.124.147.150 ██████████ 7
129.105.44.20 ██████████ 6
165.124.83.50 ██████████ 6
129.105.229.66 ██████████ 5
165.124.149.110 ██████████ 4
129.105.193.88 ██████████ 3

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

Peers

There are 11 peers for this ASN.

Peers Name
AS11164 Internet2
AS11537 Internet2
AS174 Cogent Communications, LLC
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 & Database

Upstreams

There are 5 upstreams for this ASN.

upstreams Name
AS174 Cogent Communications, LLC
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 & Database

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 & Database

Pingable IPs

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

IP Address ASN Details
129.105.82.130 AS103 Northwestern University 1.10ms from Chicago, US
129.105.237.87 AS103 Northwestern University 1.58ms from Chicago, US
129.105.175.136 AS103 Northwestern University 1.19ms from Chicago, US
165.124.3.3 AS103 Northwestern University 0.84ms from Chicago, US
165.124.128.5 AS103 Northwestern University 0.87ms from Chicago, US
165.124.249.37 AS103 Northwestern University 1.13ms from Chicago, US
129.105.106.30 AS103 Northwestern University 0.94ms from Chicago, US
165.124.10.35 AS103 Northwestern University 0.85ms from Chicago, US
129.105.119.218 AS103 Northwestern University 1.34ms from Chicago, US
2620:10d:2060:1146::1 AS103 Northwestern University 2.06ms from Chicago, US
129.105.43.29 AS103 Northwestern University 1.30ms from Chicago, US
129.105.49.1 AS103 Northwestern University 0.90ms from Chicago, US
129.105.22.125 AS103 Northwestern University 1.12ms from Chicago, US
165.124.25.23 AS103 Northwestern University 0.82ms from Chicago, US
165.124.30.53 AS103 Northwestern University 1.11ms from Chicago, US
129.105.247.227 AS103 Northwestern University 0.71ms from Chicago, US
129.105.61.224 AS103 Northwestern University 1.00ms from Chicago, US
129.105.161.33 AS103 Northwestern University 1.15ms from Chicago, US
129.105.85.138 AS103 Northwestern University 1.42ms from Chicago, US
129.105.2.147 AS103 Northwestern University 1.06ms from Chicago, US
129.105.152.148 AS103 Northwestern University 1.24ms from Chicago, US
129.105.109.227 AS103 Northwestern University 1.32ms from Chicago, US
129.105.253.137 AS103 Northwestern University 0.88ms from Chicago, US
129.105.68.140 AS103 Northwestern University 1.50ms from Chicago, US
165.124.138.17 AS103 Northwestern University 1.13ms 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
73.163.42.215 AS7922 Comcast Cable Communications, LLC 9.10ms from Ashburn, US
20.124.192.167 AS8075 Microsoft Corporation 0.45ms from Ashburn, US
181.2.167.183 AS7303 Telecom Argentina S.A. 1.69ms from Buenos Aires, AR
50.66.171.151 AS6327 Shaw Communications 4.66ms from Calgary, CA
98.158.32.55 AS17306 JAB Wireless, INC. 0.50ms from Dallas, US
173.244.199.7 AS13213 THG HOSTING LIMITED 0.40ms from Frankfurt am Main, DE
186.50.199.183 AS6057 Administracion Nacional de Telecomunicaciones 3.60ms from Montevideo, UY
112.236.255.135 AS4837 CHINA UNICOM China169 Backbone 7.96ms from Qingdao, CN
81.200.150.7 AS9123 JSC TIMEWEB 0.69ms from Saint Petersburg, RU
89.81.76.7 AS5410 Bouygues Telecom SA 1.45ms from Saint-Denis, FR
13.88.191.231 AS8075 Microsoft Corporation 0.54ms from San Jose, US
2.65.218.23 AS44034 Hi3G Access AB 7.30ms from Stockholm, SE
101.179.196.167 AS1221 Telstra Limited 1.63ms from Sydney, AU
72.210.109.87 AS22773 Cox Communications Inc. 4.56ms from Tulsa, US
122.161.189.71 AS24560 Bharti Airtel Ltd., Telemedia Services 3.33ms from Ahmedabad, IN
84.83.212.199 AS1136 KPN B.V. 3.33ms from Amsterdam, NL
77.164.25.167 AS1136 KPN B.V. 1.15ms from Amsterdam, NL
104.182.47.55 AS7018 AT&T Enterprises, LLC 8.71ms from Atlanta, US
177.235.241.215 AS28573 Claro NXT Telecomunicacoes Ltda 7.51ms from Brasilia, BR
140.177.78.23 AS12119 ITV-3 11.46ms from Chicago, US
113.184.62.199 AS45899 VNPT Corp 2.64ms from Hanoi, VN
89.166.112.231 AS16086 DNA Oyj 2.15ms from Helsinki, FI
119.155.247.87 AS17557 Pakistan Telecommunication Company Limited 12.59ms from Karachi, PK
94.63.50.231 AS12353 Vodafone Portugal 2.02ms from Lisbon, PT
216.152.234.71 AS18978 Enzu Inc 0.71ms from Los Angeles, US

Traceroute

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

$
traceroute -a -n -q1 -f3 129.105.47.2
traceroute to 129.105.47.2 (129.105.47.2): 64 hops max, 52 byte packets
3 [] 208.115.136.7 12.435 ms
4 [AS2381] 140.189.9.134 14.241 ms
5 [AS103] 192.5.143.38 7.833 ms
6 [AS103] 129.105.247.226 11.431 ms
7 *
8 [AS103] 129.105.253.95 21.394 ms
9 [AS103] 129.105.47.2 22.851 ms
Measurement taken from IPinfo ProbeNet in Chicago, 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