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 163
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
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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 163 domain names hosted across 66 IP addresses on this ASN.

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IP Address Domain Domains on this IP
129.105.136.48 ██████████ 29
165.124.248.37 ██████████ 17
165.124.149.20 ██████████ 8
165.124.147.150 ██████████ 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
165.124.248.26 ██████████ 3

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Peers

There are 10 peers for this ASN.

Peers Name
AS11164 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

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

IP Address ASN Details
165.124.73.7 AS103 Northwestern University 1.14ms from Chicago, US
129.105.36.180 AS103 Northwestern University 0.94ms from Chicago, US
129.105.51.6 AS103 Northwestern University 0.88ms from Chicago, US
165.124.175.216 AS103 Northwestern University 0.64ms from Chicago, US
165.124.179.130 AS103 Northwestern University 1.02ms from Chicago, US
165.124.219.233 AS103 Northwestern University 0.76ms from Chicago, US
129.105.127.3 AS103 Northwestern University 1.03ms from Chicago, US
129.105.97.10 AS103 Northwestern University 1.07ms from Chicago, US
165.124.158.213 AS103 Northwestern University 1.03ms from Chicago, US
165.124.110.21 AS103 Northwestern University 1.18ms from Chicago, US
165.124.129.74 AS103 Northwestern University 1.03ms from Chicago, US
165.124.138.21 AS103 Northwestern University 0.99ms from Chicago, US
129.105.87.2 AS103 Northwestern University 0.97ms from Chicago, US
129.105.46.217 AS103 Northwestern University 0.64ms from Chicago, US
165.124.130.99 AS103 Northwestern University 1.04ms from Chicago, US
165.124.47.3 AS103 Northwestern University 0.74ms from Chicago, US
165.124.245.159 AS103 Northwestern University 1.00ms from Chicago, US
165.124.41.67 AS103 Northwestern University 0.74ms from Chicago, US
129.105.5.68 AS103 Northwestern University 0.90ms from Chicago, US
165.124.98.2 AS103 Northwestern University 0.98ms from Chicago, US
165.124.20.3 AS103 Northwestern University 0.73ms from Chicago, US
165.124.52.129 AS103 Northwestern University 1.07ms from Chicago, US
165.124.82.161 AS103 Northwestern University 1.03ms from Chicago, US
165.124.31.34 AS103 Northwestern University 1.05ms from Chicago, US
165.124.244.178 AS103 Northwestern University 0.66ms 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
68.251.116.183 AS7018 AT&T Enterprises, LLC 4.87ms from Chicago, US
202.86.103.7 AS18021 Unisys NZ, IT Outsourcer, 5.22ms from Christchurch, NZ
82.113.206.87 AS30848 UNIDATA S.p.A. 0.37ms from Milan, IT
20.225.0.183 AS8075 Microsoft Corporation 0.24ms from San Antonio, US
36.238.167.7 AS3462 Data Communication Business Group 4.28ms from Taichung, TW
52.69.89.103 AS16509 Amazon.com, Inc. 0.17ms from Tokyo, JP
31.162.37.103 AS12389 PJSC Rostelecom 8.18ms from Yekaterinburg, RU
185.42.10.71 AS199939 KeenSystems B.V. 0.38ms from Amsterdam, NL
54.86.212.71 AS14618 Amazon.com, Inc. 0.54ms from Ashburn, US
98.89.118.23 AS14618 Amazon.com, Inc. 0.55ms from Ashburn, US
99.123.18.183 AS7018 AT&T Enterprises, LLC 12.68ms from Atlanta, US
49.191.35.183 AS4804 Microplex PTY LTD 3.56ms from Brisbane, AU
156.215.211.151 AS8452 TE-AS 6.59ms from Cairo, EG
213.131.226.23 AS61157 PlusServer GmbH 5.70ms from Copenhagen, DK
165.251.195.7 AS26704 Open Text Corporation 1.78ms from Dallas, US
51.9.126.7 AS6871 Plusnet 5.12ms from Erith, GB
83.192.32.71 AS3215 Orange S.A. 3.87ms from Frankfurt am Main, DE
122.9.116.231 AS58466 CHINANET Guangdong province network 1.67ms from Guangzhou, CN
148.197.6.7 AS786 Jisc Services Limited 4.38ms from London, GB
188.85.11.119 AS12430 VODAFONE ESPANA S.A.U. 16.46ms from Madrid, ES
94.158.105.231 AS48036 OOO Scientific-Production Enterprise Edma 1.50ms from Moscow, RU
124.18.61.55 AS18126 Chubu Telecommunications Company, Inc. 10.04ms from Osaka, JP
76.115.215.7 AS7922 Comcast Cable Communications, LLC 9.88ms from Portland, US
95.238.105.135 AS3269 Telecom Italia S.p.A. 15.25ms from Rome, IT
34.168.96.135 AS396982 Google LLC 0.15ms from The Dalles, US

Traceroute

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

$
traceroute -a -n -q1 -f5 -m15 129.105.116.9
traceroute to 129.105.116.9 (129.105.116.9): 15 hops max, 52 byte packets
5 [AS213230] 5.161.0.85 0.356 ms
6 *
7 *
8 *
9 [AS6939] 184.105.222.71 19.769 ms
10 *
11 *
12 [AS103] 192.5.143.38 21.938 ms
13 *
14 *
15 *
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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