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
2620:10d:2010:6011::100 AS103 Northwestern University 1.80ms from Chicago, US
165.124.20.3 AS103 Northwestern University 0.86ms from Chicago, US
165.124.110.27 AS103 Northwestern University 1.18ms from Chicago, US
129.105.173.102 AS103 Northwestern University 1.15ms from Chicago, US
165.124.10.17 AS103 Northwestern University 0.83ms from Chicago, US
165.124.6.2 AS103 Northwestern University 0.85ms from Chicago, US
165.124.138.19 AS103 Northwestern University 1.14ms from Chicago, US
129.105.103.81 AS103 Northwestern University 1.11ms from Chicago, US
129.105.9.3 AS103 Northwestern University 1.15ms from Chicago, US
129.105.156.53 AS103 Northwestern University 1.10ms from Chicago, US
129.105.31.20 AS103 Northwestern University 1.10ms from Chicago, US
8.30.249.3 AS103 Northwestern University 1.16ms from Chicago, US
129.105.158.42 AS103 Northwestern University 1.04ms from Chicago, US
199.249.167.2 AS103 Northwestern University 14.73ms from Ashburn, US
165.124.184.158 AS103 Northwestern University 1.05ms from Chicago, US
165.124.31.35 AS103 Northwestern University 1.12ms from Chicago, US
165.124.3.3 AS103 Northwestern University 0.85ms from Chicago, US
129.105.255.129 AS103 Northwestern University 1.21ms from Chicago, US
129.105.36.180 AS103 Northwestern University 1.03ms from Chicago, US
165.124.172.2 AS103 Northwestern University 1.20ms from Chicago, US
129.105.131.195 AS103 Northwestern University 1.08ms from Chicago, US
165.124.43.99 AS103 Northwestern University 0.82ms from Chicago, US
165.124.47.3 AS103 Northwestern University 0.75ms from Chicago, US
129.105.46.218 AS103 Northwestern University 0.75ms from Chicago, US
165.124.175.216 AS103 Northwestern University 0.77ms 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
77.164.220.247 AS1136 KPN B.V. 0.94ms from Amsterdam, NL
82.157.153.71 AS45090 Shenzhen Tencent Computer Systems Company Limited 1.94ms from Beijing, CN
52.35.199.167 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
92.118.50.183 AS136787 PacketHub S.A. 0.48ms from Los Angeles, US
79.23.127.199 AS3269 Telecom Italia S.p.A. 5.20ms from Milan, IT
131.213.217.87 AS2527 Sony Network Communications Inc. 4.00ms from Osaka, JP
119.208.194.247 AS4766 Korea Telecom 1.61ms from Seoul, KR
14.68.244.167 AS4766 Korea Telecom 1.75ms from Seoul, KR
54.150.0.39 AS16509 Amazon.com, Inc. 0.26ms from Tokyo, JP
210.136.85.87 AS2514 NTT PC Communications, Inc. 3.63ms from Tokyo, JP
52.174.45.87 AS8075 Microsoft Corporation 0.15ms from Amsterdam, NL
54.213.83.23 AS16509 Amazon.com, Inc. 0.16ms from Boardman, US
198.177.161.247 AS40292 Cintas Corporation 3.47ms from Chicago, US
187.95.214.7 AS270626 DOMINION UAULL NET TEC DE CON INTELIGENTES LTDA 7.85ms from Curitiba, BR
90.237.72.199 AS3301 Telia Company AB 15.46ms from Goeteborg, SE
118.37.131.247 AS4766 Korea Telecom 0.91ms from Incheon, KR
72.27.121.103 AS30689 FLOW 5.97ms from Kingston, JM
94.78.234.87 AS12389 PJSC Rostelecom 0.99ms from Krasnoyarsk, RU
82.33.61.87 AS5089 Virgin Media Limited 8.92ms from London, GB
87.4.78.199 AS3269 Telecom Italia S.p.A. 1.90ms from Milan, IT
174.166.138.215 AS7922 Comcast Cable Communications, LLC 5.53ms from Piscataway, US
60.217.139.247 AS4837 CHINA UNICOM China169 Backbone 5.89ms from Qingdao, CN
89.192.19.103 AS8011 MongoDB, Inc. 0.15ms from Reston, US
154.28.210.71 AS262287 Latitude.sh LTDA 0.13ms from Sao Paulo, BR
89.20.67.7 AS41480 Systemec BV 3.63ms from Amsterdam, NL

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 199.74.108.0
traceroute to 199.74.108.0 (199.74.108.0): 6 hops max, 52 byte packets
2 [AS58061] 38.180.36.1 0.381 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Almaty, KZ
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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