Autonomous System details

AS103

Northwestern University  ·  northwestern.edu

United States

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AS103 – Northwestern University

Field Value
Country United States
Website northwestern.edu
Hosted domains 160
IPv4 addresses 149,504
IPv6 addresses 154,742,504,910,672,530,000,000,000
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
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WHOIS Details

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                                                ASHandle:       AS103
                                                OrgID:          AS103
                                                ASName:         AS103
                                                ASNumber:       AS103
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

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

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IP Address Domain Domains on this IP
129.105.136.48 ██████████ 30
165.124.248.37 ██████████ 17
129.105.193.208 ██████████ 6
165.124.83.50 ██████████ 6
129.105.44.20 ██████████ 6
165.124.149.20 ██████████ 6
129.105.229.66 ██████████ 5
165.124.147.150 ██████████ 5
165.124.149.110 ██████████ 4
129.105.5.141 ██████████ 3

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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
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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
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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

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

IP Address ASN Details
129.105.186.1 AS103 Northwestern University 1.10ms from Chicago, US
129.105.64.1 AS103 Northwestern University 1.18ms from Chicago, US
129.105.231.2 AS103 Northwestern University 1.13ms from Chicago, US
129.105.97.10 AS103 Northwestern University 1.13ms from Chicago, US
165.124.31.35 AS103 Northwestern University 1.12ms from Chicago, US
129.105.208.146 AS103 Northwestern University 2.06ms from Chicago, US
129.105.185.35 AS103 Northwestern University 1.10ms from Chicago, US
129.105.12.131 AS103 Northwestern University 1.13ms from Chicago, US
129.105.175.3 AS103 Northwestern University 1.11ms from Chicago, US
165.124.159.2 AS103 Northwestern University 0.87ms from Chicago, US
129.105.202.215 AS103 Northwestern University 1.96ms from Chicago, US
129.105.160.201 AS103 Northwestern University 1.44ms from Chicago, US
129.105.127.19 AS103 Northwestern University 1.19ms from Chicago, US
165.124.6.2 AS103 Northwestern University 0.85ms from Chicago, US
165.124.30.72 AS103 Northwestern University 1.15ms from Chicago, US
2620:10d:2050:a0fe::2 AS103 Northwestern University 1.15ms from Chicago, US
129.105.181.226 AS103 Northwestern University 0.84ms from Chicago, US
165.124.131.65 AS103 Northwestern University 0.79ms from Chicago, US
129.105.48.1 AS103 Northwestern University 1.13ms from Chicago, US
129.105.221.146 AS103 Northwestern University 1.23ms from Chicago, US
129.105.117.88 AS103 Northwestern University 1.92ms from Chicago, US
165.124.19.35 AS103 Northwestern University 0.81ms from Chicago, US
129.105.173.102 AS103 Northwestern University 1.15ms from Chicago, US
129.105.239.129 AS103 Northwestern University 1.13ms from Chicago, US
129.105.217.70 AS103 Northwestern University 1.88ms 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
107.241.14.231 AS20057 AT&T Enterprises, LLC 2.75ms from Atlanta, US
82.157.153.71 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.94ms from Beijing, CN
81.247.227.103 AS5432 Proximus NV 1.98ms from Brussels, BE
67.18.105.103 AS36351 IBM Cloud 1.53ms from Dallas, US
31.51.211.55 AS2856 British Telecommunications PLC 5.12ms from Erith, GB
113.8.235.247 AS4837 CHINA UNICOM China169 Backbone 7.27ms from Harbin, CN
23.63.216.71 AS55836 Reliance Jio Infocomm Limited 0.53ms from Mumbai, IN
42.179.219.23 AS4837 CHINA UNICOM China169 Backbone 8.46ms from Tieling, CN
83.9.122.119 AS5617 Orange Polska Spolka Akcyjna 5.22ms from Warsaw, PL
36.99.47.231 AS137687 Luoyang, Henan Province, P.R.China. 3.37ms from Zhengzhou, CN
185.42.10.71 AS199939 KeenSystems B.V. 0.49ms from Amsterdam, NL
71.234.87.71 AS7922 Comcast Cable Communications, LLC 5.50ms from Boston, US
41.238.143.71 AS8452 TE-AS 8.24ms from Cairo, EG
152.110.94.247 AS20011 Dimension Data 1.25ms from Cape Town, ZA
87.93.146.87 AS16086 DNA Oyj 8.86ms from Helsinki, FI
45.114.94.215 AS136209 CyberForest LLC. 1.03ms from Incheon, KR
122.41.128.7 AS17858 LG POWERCOMM 1.71ms from Incheon, KR
1.234.224.119 AS9318 SK Broadband Co Ltd 1.36ms from Incheon, KR
79.23.127.199 AS3269 Telecom Italia S.p.A. 5.20ms from Milan, IT
112.251.165.135 AS4837 CHINA UNICOM China169 Backbone 8.87ms from Qingdao, CN
178.218.190.167 AS25019 Saudi Telecom Company JSC 3.29ms from Riyadh, SA
222.113.244.119 AS4766 Korea Telecom 2.90ms from Seoul, KR
54.169.214.71 AS16509 Amazon.com, Inc. 0.15ms from Singapore, SG
140.137.239.247 AS1659 Taiwan Academic Network (TANet) Information Center 2.47ms from Taipei, TW
54.213.83.23 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US

Traceroute

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

$
traceroute -a -n -q1 -m7 165.124.240.150
traceroute to 165.124.240.150 (165.124.240.150): 7 hops max, 52 byte packets
2 *
3 [AS2381] 140.189.9.134 15.124 ms
4 [AS103] 192.5.143.38 14.794 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Ashburn, 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.

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