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
165.124.123.135 AS103 Northwestern University 1.17ms from Chicago, US
165.124.83.55 AS103 Northwestern University 1.13ms from Chicago, US
165.124.146.41 AS103 Northwestern University 1.59ms from Chicago, US
129.105.254.130 AS103 Northwestern University 1.15ms from Chicago, US
199.249.165.2 AS103 Northwestern University 0.97ms from Chicago, US
129.105.127.19 AS103 Northwestern University 1.19ms from Chicago, US
129.105.152.133 AS103 Northwestern University 1.18ms from Chicago, US
129.105.13.13 AS103 Northwestern University 1.04ms from Chicago, US
129.105.169.25 AS103 Northwestern University 1.13ms from Chicago, US
165.124.244.179 AS103 Northwestern University 0.76ms from Chicago, US
165.124.51.129 AS103 Northwestern University 0.82ms from Chicago, US
2620:10d:2011:2010::8169:2c52 AS103 Northwestern University 1.65ms from Chicago, US
199.249.168.35 AS103 Northwestern University 14.67ms from Ashburn, US
2620:10d:2000:2068:: AS103 Northwestern University 1.67ms from Chicago, US
129.105.179.43 AS103 Northwestern University 1.14ms from Chicago, US
129.105.121.102 AS103 Northwestern University 1.12ms from Chicago, US
165.124.245.67 AS103 Northwestern University 1.13ms from Chicago, US
165.124.138.19 AS103 Northwestern University 1.14ms from Chicago, US
165.124.110.27 AS103 Northwestern University 1.18ms from Chicago, US
129.105.106.30 AS103 Northwestern University 0.83ms from Chicago, US
129.105.164.217 AS103 Northwestern University 1.15ms from Chicago, US
129.105.131.195 AS103 Northwestern University 1.08ms from Chicago, US
129.105.247.243 AS103 Northwestern University 0.68ms from Chicago, US
129.105.68.140 AS103 Northwestern University 2.04ms from Chicago, US
129.105.202.215 AS103 Northwestern University 1.96ms 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
65.175.243.55 AS11776 Breezeline 10.63ms from Boston, US
78.92.109.39 AS5483 Magyar Telekom Plc. 4.69ms from Budapest, HU
76.16.168.103 AS7922 Comcast Cable Communications, LLC 5.32ms from Chicago, US
35.157.149.247 AS16509 Amazon.com, Inc. 0.16ms from Frankfurt am Main, DE
13.42.53.215 AS16509 Amazon.com, Inc. 0.69ms from London, GB
82.33.61.87 AS5089 Virgin Media Limited 8.92ms from London, GB
68.113.249.103 AS20115 Charter Communications LLC 17.84ms from Minneapolis, US
37.151.28.7 AS9198 JSC Kazakhtelecom 6.16ms from Astana, KZ
71.14.118.55 AS20115 Charter Communications LLC 11.57ms from Atlanta, US
73.7.174.39 AS7922 Comcast Cable Communications, LLC 4.94ms from Atlanta, US
36.143.229.55 AS24547 Hebei Mobile Communication Company Limited 17.72ms from Beijing, CN
49.191.35.183 AS4804 Microplex PTY LTD 3.67ms from Brisbane, AU
88.246.12.167 AS9121 Turk Telekomunikasyon Anonim Sirketi 1.15ms from Bursa, TR
98.158.32.55 AS17306 JAB Wireless, INC. 0.34ms from Dallas, US
87.93.146.87 AS16086 DNA Oyj 8.86ms from Helsinki, FI
84.247.142.215 AS51167 Contabo GmbH 0.22ms from Lauterbourg, FR
143.255.103.167 AS28146 MHNET TELECOM 9.30ms from Osasco, BR
109.105.126.23 AS39590 NORDUnet 17.25ms from Stockholm, SE
218.165.53.7 AS3462 Data Communication Business Group 1.28ms from Taipei, TW
202.37.147.7 AS4770 ICONZ Ltd 0.15ms from Wellington, NZ
35.134.22.87 AS20115 Charter Communications LLC 13.03ms from Ashburn, US
184.34.55.55 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
52.27.138.71 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
83.71.187.247 AS5466 Eircom Limited 1.44ms from Dublin, IE
93.225.169.151 AS3320 Deutsche Telekom AG 10.52ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f6 165.124.33.131
traceroute to 165.124.33.131 (165.124.33.131): 64 hops max, 52 byte packets
6 [AS3356] 4.69.203.230 18.253 ms
7 [AS3356] 4.53.96.26 17.31 ms
8 [AS103] 129.105.247.226 18.345 ms
9 [AS103] 129.105.247.211 18.992 ms
10 [AS103] 165.124.33.131 18.672 ms
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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