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 154,742,504,910,672,534,362,390,528
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 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 ██████████ 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

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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

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

IP Address ASN Details
165.124.149.28 AS103 Northwestern University 14.87ms from Ashburn, US
165.124.176.196 AS103 Northwestern University 1.13ms from Chicago, US
165.124.6.1 AS103 Northwestern University 0.84ms from Chicago, US
129.105.106.30 AS103 Northwestern University 0.90ms from Chicago, US
129.105.229.113 AS103 Northwestern University 1.19ms from Chicago, US
129.105.9.1 AS103 Northwestern University 1.20ms from Chicago, US
165.124.65.79 AS103 Northwestern University 1.30ms from Chicago, US
129.105.181.225 AS103 Northwestern University 0.91ms from Chicago, US
129.105.85.138 AS103 Northwestern University 2.01ms from Chicago, US
165.124.25.49 AS103 Northwestern University 0.83ms from Chicago, US
165.124.83.77 AS103 Northwestern University 1.15ms from Chicago, US
129.105.254.129 AS103 Northwestern University 1.25ms from Chicago, US
129.105.230.97 AS103 Northwestern University 1.21ms from Chicago, US
129.105.121.33 AS103 Northwestern University 1.15ms from Chicago, US
192.26.87.104 AS103 Northwestern University 0.64ms from Chicago, US
165.124.179.129 AS103 Northwestern University 1.14ms from Chicago, US
165.124.128.4 AS103 Northwestern University 0.90ms from Chicago, US
129.105.222.1 AS103 Northwestern University 1.23ms from Chicago, US
129.105.100.99 AS103 Northwestern University 1.25ms from Chicago, US
129.105.23.172 AS103 Northwestern University 1.28ms from Chicago, US
165.124.47.1 AS103 Northwestern University 0.81ms from Chicago, US
165.124.8.1 AS103 Northwestern University 0.77ms from Chicago, US
129.105.159.32 AS103 Northwestern University 1.13ms from Chicago, US
165.124.227.51 AS103 Northwestern University 1.22ms from Chicago, US
165.124.246.27 AS103 Northwestern University 1.39ms 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
199.223.115.151 AS54641 InMotion Hosting, Inc. 0.30ms from Ashburn, US
104.182.47.55 AS7018 AT&T Enterprises, LLC 8.69ms from Atlanta, US
152.203.76.7 AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC 16.07ms from Bogota, CO
202.86.103.7 AS18021 Unisys NZ, IT Outsourcer, 5.12ms from Christchurch, NZ
71.73.131.103 AS10796 Charter Communications Inc 8.79ms from Columbus, US
23.115.107.103 AS7018 AT&T Enterprises, LLC 2.32ms from Dallas, US
217.231.99.71 AS3320 Deutsche Telekom AG 7.02ms from Duesseldorf, DE
177.241.73.7 AS13999 Mega Cable, S.A. de C.V. 1.33ms from Guadalajara, MX
106.32.148.167 AS4134 CHINANET-BACKBONE 6.71ms from Guiyang, CN
140.245.209.39 AS31898 Oracle Corporation 0.16ms from Hyderabad, IN
106.194.82.231 AS45609 Bharti Airtel Ltd. AS for GPRS Service 2.64ms from Kolkata, IN
54.175.201.183 AS14618 Amazon.com, Inc. 0.22ms from Reston, US
218.156.130.119 AS4766 Korea Telecom 1.45ms from Seoul, KR
68.184.3.23 AS20115 Charter Communications LLC 7.90ms from St. Louis, US
36.110.5.87 AS4847 China Networks Inter-Exchange 2.56ms from Tianjin, CN
52.68.32.231 AS16509 Amazon.com, Inc. 0.26ms from Tokyo, JP
142.198.231.167 AS577 Bell Canada 1.44ms from Toronto, CA
73.81.175.119 AS7922 Comcast Cable Communications, LLC 8.20ms from Ashburn, US
101.30.98.119 AS4837 CHINA UNICOM China169 Backbone 3.99ms from Beijing, CN
83.71.187.247 AS5466 Eircom Limited 1.45ms from Dublin, IE
27.154.166.231 AS4134 CHINANET-BACKBONE 6.33ms from Fuzhou, CN
122.9.116.231 AS58466 CHINANET Guangdong province network 1.75ms from Guangzhou, CN
104.34.200.215 AS20001 Charter Communications Inc 4.62ms from Los Angeles, US
88.209.70.151 AS6758 Monaco Telecom S.A. 4.28ms from Marseille, FR
97.210.107.199 AS6167 Verizon Business 14.81ms from Seattle, US

Traceroute

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

$
traceroute -a -n -q1 -f4 129.105.243.214
traceroute to 129.105.243.214 (129.105.243.214): 64 hops max, 52 byte packets
4 [] 208.115.136.7 1.055 ms
5 [AS2381] 140.189.9.134 1.232 ms
6 [AS103] 192.5.143.38 1.388 ms
9 *
10 [AS103] 129.105.253.191 1.958 ms
11 [AS103] 129.105.243.214 2.339 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.

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