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 179
Number of IPv4 149,504
Number of IPv6 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
165.124.186.0/24 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 179 domain names hosted across 67 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 ██████████ 24
165.124.248.37 ██████████ 18
165.124.149.20 ██████████ 8
129.105.193.208 ██████████ 8
165.124.83.50 ██████████ 6
129.105.44.20 ██████████ 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
129.105.182.135 AS103 Northwestern University 1.50ms from Chicago, US
2620:10d:2010:6011::100 AS103 Northwestern University 1.75ms from Chicago, US
129.105.97.10 AS103 Northwestern University 1.59ms from Chicago, US
129.105.131.195 AS103 Northwestern University 1.65ms from Chicago, US
129.105.25.2 AS103 Northwestern University 1.71ms from Chicago, US
199.249.169.12 AS103 Northwestern University 1.46ms from Chicago, US
129.105.64.1 AS103 Northwestern University 1.63ms from Chicago, US
165.124.0.193 AS103 Northwestern University 1.59ms from Chicago, US
165.124.26.117 AS103 Northwestern University 1.01ms from Chicago, US
129.105.148.1 AS103 Northwestern University 1.70ms from Chicago, US
129.105.181.227 AS103 Northwestern University 1.12ms from Chicago, US
129.105.112.215 AS103 Northwestern University 1.51ms from Chicago, US
129.105.169.85 AS103 Northwestern University 1.54ms from Chicago, US
129.105.230.97 AS103 Northwestern University 1.63ms from Chicago, US
199.249.167.65 AS103 Northwestern University 2.56ms from Chicago, US
165.124.36.129 AS103 Northwestern University 1.05ms from Chicago, US
129.105.82.128 AS103 Northwestern University 1.56ms from Chicago, US
129.105.159.215 AS103 Northwestern University 1.64ms from Chicago, US
165.124.1.49 AS103 Northwestern University 0.97ms from Chicago, US
129.105.121.103 AS103 Northwestern University 1.61ms from Chicago, US
129.105.173.102 AS103 Northwestern University 1.62ms from Chicago, US
38.124.97.2 AS103 Northwestern University 1.07ms from Chicago, US
165.124.170.130 AS103 Northwestern University 1.58ms from Chicago, US
165.124.8.61 AS103 Northwestern University 0.98ms from Chicago, US
129.105.164.194 AS103 Northwestern University 1.59ms 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
44.254.142.103 AS16509 Amazon.com, Inc. 0.14ms from Boardman, US
105.79.58.231 AS36884 Wana Corporate 9.36ms from Casablanca, MA
66.83.134.55 AS7029 Windstream Communications LLC 0.49ms from Dallas, US
8.139.89.87 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 3.79ms from Hangzhou, CN
178.88.150.87 AS9198 JSC Kazakhtelecom 7.72ms from Karagandy, KZ
42.58.23.55 AS4837 CHINA UNICOM China169 Backbone 10.87ms from Liaoyang, CN
86.172.145.215 AS2856 British Telecommunications PLC 8.15ms from London, GB
173.232.28.215 AS62904 Eonix Corporation 0.26ms from New York City, US
79.252.136.151 AS3320 Deutsche Telekom AG 9.91ms from Nuernberg, DE
87.171.178.87 AS3320 Deutsche Telekom AG 1.88ms from Nuernberg, DE
180.144.15.199 AS17511 OPTAGE Inc. 2.23ms from Osaka, JP
18.204.120.151 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
1.234.224.119 AS9318 SK Broadband Co Ltd 1.43ms from Seoul, KR
47.102.63.151 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 3.02ms from Shanghai, CN
101.173.13.231 AS1221 Telstra Limited 2.49ms from Adelaide, AU
159.65.206.183 AS14061 DigitalOcean, LLC 0.20ms from Amsterdam, NL
2.134.132.55 AS9198 JSC Kazakhtelecom 7.70ms from Karagandy, KZ
13.232.202.231 AS16509 Amazon.com, Inc. 0.11ms from Mumbai, IN
87.151.24.231 AS3320 Deutsche Telekom AG 4.98ms from Nuernberg, DE
104.16.199.119 AS13335 Cloudflare, Inc. 0.10ms from Porto Alegre, BR
157.131.124.231 AS46375 Sonic Telecom LLC 2.33ms from San Jose, US
187.159.236.71 AS8151 UNINET 4.22ms from Santiago de Queretaro, MX
102.158.192.231 AS37705 TOPNET 1.68ms from Tunis, TN
98.158.32.55 AS17306 JAB Wireless, INC. 0.51ms from Dallas, US
187.113.98.55 AS18881 TELEFÔNICA BRASIL S.A 18.56ms from Fortaleza, BR

Traceroute

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

$
traceroute -a -n -q1 -f3 -m12 129.105.137.161
traceroute to 129.105.137.161 (129.105.137.161): 12 hops max, 52 byte packets
3 [] 206.51.7.5 0.833 ms
4 *
5 *
7 *
8 *
9 [AS103] 192.5.143.38 12.417 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Kansas City, 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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