AS number 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 183
Number of IPv4 149,504
Number of IPv6 154,742,504,910,672,534,362,390,528
ASN type Education
Registry arin
Allocated 38 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
165.124.232.0/22 Northwestern University 1,024
8.30.248.0/22 Level 3 Parent, LLC 1,024
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
8.28.178.0/23 Northwestern University 512
165.124.17.0/24 Northwestern University 256
165.124.186.0/24 Northwestern University 256
192.26.85.0/24 Northwestern University 256
192.31.253.0/24 Northwestern University 256
192.5.143.0/24 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
38.124.97.0/24 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 183 domain names hosted across 71 IP addresses on this ASN.

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IP Address Domain Domains on this IP
129.105.136.48 ██████████ 27
165.124.147.150 ██████████ 23
165.124.248.37 ██████████ 18
129.105.193.208 ██████████ 8
165.124.149.20 ██████████ 8
129.105.44.20 ██████████ 6
165.124.83.50 ██████████ 6
129.105.229.66 ██████████ 5
129.105.254.100 ██████████ 4
165.124.149.110 ██████████ 4

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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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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 ASN Database Download

Downstreams

There are no downstreams for this ASN.

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ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
129.105.49.1 AS103 Northwestern University 1.08ms from Chicago, US
165.124.155.2 AS103 Northwestern University 1.10ms from Chicago, US
129.105.182.34 AS103 Northwestern University 1.34ms from Chicago, US
129.105.247.227 AS103 Northwestern University 0.64ms from Chicago, US
129.105.186.1 AS103 Northwestern University 1.39ms from Chicago, US
165.124.246.27 AS103 Northwestern University 1.61ms from Chicago, US
129.105.253.137 AS103 Northwestern University 1.10ms from Chicago, US
165.124.1.47 AS103 Northwestern University 1.01ms from Chicago, US
129.105.100.97 AS103 Northwestern University 1.48ms from Chicago, US
129.105.27.194 AS103 Northwestern University 1.39ms from Chicago, US
165.124.227.51 AS103 Northwestern University 1.49ms from Chicago, US
165.124.130.105 AS103 Northwestern University 1.37ms from Chicago, US
129.105.2.162 AS103 Northwestern University 1.28ms from Chicago, US
165.124.251.217 AS103 Northwestern University 0.67ms from Chicago, US
165.124.172.119 AS103 Northwestern University 1.43ms from Chicago, US
2620:10d:2060:1146::1 AS103 Northwestern University 1.58ms from Chicago, US
129.105.123.129 AS103 Northwestern University 1.42ms from Chicago, US
129.105.127.1 AS103 Northwestern University 1.38ms from Chicago, US
165.124.179.129 AS103 Northwestern University 1.39ms from Chicago, US
165.124.52.131 AS103 Northwestern University 1.51ms from Chicago, US
129.105.210.3 AS103 Northwestern University 1.45ms from Chicago, US
129.105.106.30 AS103 Northwestern University 1.14ms from Chicago, US
129.105.108.3 AS103 Northwestern University 1.40ms from Chicago, US
165.124.134.254 AS103 Northwestern University 1.06ms from Chicago, US
165.124.170.130 AS103 Northwestern University 1.41ms 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
35.81.191.231 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
85.197.63.23 AS8422 NetCologne Gesellschaft fur Telekommunikation mbH 2.35ms from Duesseldorf, DE
18.60.148.167 AS16509 Amazon.com, Inc. 2.20ms from Hyderabad, IN
77.245.149.7 AS42868 Niobe Telekomunikasyon Bilisim Teknolojileri Yazilim Danismanlik Sanayi ve Ticaret Ltd. Sti. 0.26ms from Istanbul, TR
88.224.254.7 AS9121 Turk Telekomunikasyon Anonim Sirketi 4.66ms from Istanbul, TR
113.230.122.183 AS4837 CHINA UNICOM China169 Backbone 5.95ms from Liaoyang, CN
42.86.3.167 AS4837 CHINA UNICOM China169 Backbone 9.45ms from Liaoyang, CN
20.204.142.87 AS8075 Microsoft Corporation 0.13ms from Lohogaon, IN
70.109.162.87 AS13977 Consolidated Communications, Inc. 7.11ms from Montreal, CA
83.115.252.23 AS3215 Orange S.A. 6.62ms from Paris, FR
69.235.239.55 AS7018 AT&T Enterprises, LLC 6.07ms from Redding, US
14.41.125.103 AS4766 Korea Telecom 4.35ms from Seoul, KR
95.202.219.247 AS3301 Telia Company AB 15.17ms from Stockholm, SE
35.72.230.71 AS16509 Amazon.com, Inc. 0.18ms from Tokyo, JP
54.150.0.39 AS16509 Amazon.com, Inc. 0.17ms from Tokyo, JP
20.37.120.231 AS8075 Microsoft Corporation 0.20ms from Tokyo, JP
211.132.143.167 AS9595 NTT-ME Corporation 1.47ms from Tokyo, JP
197.3.85.183 AS37705 TOPNET 1.39ms from Tunis, TN
77.164.220.247 AS1136 KPN B.V. 0.90ms from Amsterdam, NL
132.232.247.7 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.90ms from Chengdu, CN
73.67.9.119 AS7922 Comcast Cable Communications, LLC 14.07ms from Chicago, US
86.144.48.55 AS2856 British Telecommunications PLC 3.53ms from London, GB
183.77.12.231 AS4685 Asahi Net 5.32ms from Osaka, JP
106.254.113.135 AS3786 LG DACOM Corporation 2.32ms from Seoul, KR
20.224.139.135 AS8075 Microsoft Corporation 0.23ms 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 -f4 192.26.87.161
traceroute to 192.26.87.161 (192.26.87.161): 64 hops max, 52 byte packets
5 *
6 *
7 *
8 [AS6939] 184.105.222.71 92.933 ms
9 *
10 *
11 [AS103] 192.26.87.161 99.168 ms
Measurement taken from IPinfo ProbeNet in Brussels, BE
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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