Autonomous System details

AS1742

Harvard University  ·  harvard.edu

United States

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS1742 – Harvard University

Field Value
Country United States
Website harvard.edu
Hosted domains 292
IPv4 addresses 203,520
IPv6 addresses 84,185,967,300,503,932,245,900,000,000
ASN type Education
Registry arin
Allocated 34 years ago on Feb 19, 1992
Updated 2 years ago on Dec 21, 2023

IP Ranges

Netblock Company Num of IPs
128.103.0.0/16 Harvard University 65,536
131.142.0.0/16 Smithsonian Astrophysical Observatory 65,536
140.247.0.0/16 Harvard University 65,536
65.112.0.0/20 Harvard University 4,096
67.134.204.0/22 Harvard University 1,024
199.94.60.0/22 Harvard University 1,024
140.247.111.0/24 Harvard University 256
140.247.152.0/24 Harvard University 256
140.247.174.0/24 Harvard University 256
140.247.236.0/24 Harvard University 256
192.5.66.0/24 Harvard University 256
192.54.223.0/24 Harvard University 256
192.131.102.0/24 Harvard University 256

Netblock Company
2607:fb60::/32 Harvard University
2602:fca9::/36 Harvard University
2607:fb60:2404::/46 Harvard University
2620:32:8000::/48 Smithsonian Astrophysical Observatory
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view WHOIS details › 

                                                ASHandle:       AS1742
                                                OrgID:          AS1742
                                                ASName:         AS1742
                                                ASNumber:       AS1742
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP WHOIS API & Database

Hosted Domains

There are 292 domain names hosted across 55 IP addresses on this ASN.

Join for free to explore hosted domains ›
IP Address Domain Domains on this IP
128.103.64.94 ██████████ 104
128.103.64.74 ████████ 93
199.94.63.6 ██████████ 11
131.142.21.11 ██████████ 8
131.142.21.13 ██████████ 5
65.112.0.71 ██████████ 4
140.247.63.234 ██████████ 3
128.103.109.12 ██████████ 3
140.247.173.13 ██████████ 3
128.103.124.40 ██████████ 3

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API & Database

Peers

There are 9 peers for this ASN.

Peers Name
AS10578 Harvard University
AS11164 Internet2
AS11537 Internet2
AS1239 Cogent Communications, LLC
AS13315 Harvard Business School
AS174 Cogent Communications, LLC
AS3356 Level 3 Parent, LLC
AS3549 Level 3 Parent, LLC
AS40127 Longwood Medical and Academic Area (LMA)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS10578 Harvard University
AS11164 Internet2
AS174 Cogent Communications, LLC
AS3356 Level 3 Parent, LLC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Downstreams

There are 2 downstreams for this ASN.

Downstreams Name
AS13315 Harvard Business School
AS40127 Longwood Medical and Academic Area (LMA)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

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

IP Address ASN Details
128.103.107.142 AS1742 Harvard University 1.27ms from Boston, US
140.247.209.73 AS1742 Harvard University 1.45ms from Boston, US
140.247.168.210 AS1742 Harvard University 1.80ms from Boston, US
128.103.235.1 AS1742 Harvard University 1.34ms from Boston, US
140.247.235.193 AS1742 Harvard University 1.17ms from Boston, US
140.247.120.200 AS1742 Harvard University 1.34ms from Boston, US
199.94.62.3 AS1742 Harvard University 3.78ms from Boston, US
128.103.16.1 AS1742 Harvard University 1.54ms from Boston, US
140.247.212.195 AS1742 Harvard University 1.33ms from Boston, US
2607:fb60:5:480::2 AS1742 Harvard University 5.52ms from New York City, US
2607:fb60:6:1002::2 AS1742 Harvard University 5.97ms from New York City, US
140.247.29.64 AS1742 Harvard University 1.59ms from Boston, US
131.142.21.11 AS1742 Harvard University 1.44ms from Boston, US
128.103.216.1 AS1742 Harvard University 1.13ms from Boston, US
140.247.69.167 AS1742 Harvard University 1.18ms from Boston, US
140.247.200.137 AS1742 Harvard University 1.24ms from Boston, US
140.247.22.4 AS1742 Harvard University 1.26ms from Boston, US
128.103.250.193 AS1742 Harvard University 1.38ms from Boston, US
140.247.117.47 AS1742 Harvard University 1.30ms from Boston, US
140.247.210.62 AS1742 Harvard University 1.35ms from Boston, US
199.94.60.1 AS1742 Harvard University 3.40ms from Boston, US
140.247.100.253 AS1742 Harvard University 1.38ms from Boston, US
140.247.84.36 AS1742 Harvard University 1.28ms from Boston, US
140.247.162.154 AS1742 Harvard University 1.50ms from Boston, US
128.103.97.1 AS1742 Harvard University 1.30ms from Boston, 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
92.111.13.46 AS33915 Vodafone Libertel B.V. 7.35ms from Amsterdam, NL
20.25.35.62 AS8075 Microsoft Corporation 0.48ms from Ashburn, US
90.64.109.94 AS15962 Orange Slovensko a.s. 8.74ms from Bratislava, SK
213.49.13.142 AS5432 Proximus NV 2.49ms from Brussels, BE
46.251.1.14 AS42232 PARISAT Tavkozlesi es Szolgaltato Korlatolt Felelossegu Tarsasag 11.07ms from Budapest, HU
75.173.10.254 AS19901 Brightspeed 4.59ms from Dallas, US
134.130.19.254 AS47610 RWTH Aachen University 4.89ms from Frankfurt am Main, DE
61.142.255.174 AS4134 CHINANET-BACKBONE 3.17ms from Guangzhou, CN
113.161.254.14 AS45899 VNPT Corp 4.25ms from Ho Chi Minh City, VN
202.153.105.222 AS9925 VDC Powerbase Hong Kong Data Centers Limited 2.02ms from Hong Kong, HK
37.224.96.110 AS25019 Saudi Telecom Company JSC 0.91ms from Jeddah, SA
31.176.209.206 AS9146 BIHNET Autonomus System 11.74ms from Novi Travnik, BA
112.255.7.78 AS4837 CHINA UNICOM China169 Backbone 1.09ms from Qingdao, CN
50.19.22.126 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
210.95.118.254 AS4766 Korea Telecom 5.87ms from Seoul, KR
210.243.121.158 AS9924 Taiwan Fixed Network, Telco and Network Service Provider. 1.16ms from Taipei, TW
60.220.81.126 AS4837 CHINA UNICOM China169 Backbone 5.48ms from Taiyuan, CN
134.126.145.142 AS10357 James Madison University 4.64ms from Ashburn, US
96.91.254.206 AS7922 Comcast Cable Communications, LLC 7.88ms from Ashburn, US
24.147.57.174 AS7922 Comcast Cable Communications, LLC 8.02ms from Boston, US
135.224.68.110 AS8075 Microsoft Corporation 0.57ms from Chicago, US
203.143.20.126 AS5087 Lanka Communication Services 3.64ms from Colombo, LK
24.155.79.254 AS7459 Grande Communications Networks, LLC 6.58ms from Dallas, US
217.247.150.78 AS3320 Deutsche Telekom AG 7.06ms from Frankfurt am Main, DE
103.44.253.142 AS4816 China Telecom (Group) 0.69ms from Guangzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f5 -m9 128.103.163.226
traceroute to 128.103.163.226 (128.103.163.226): 9 hops max, 52 byte packets
5 [AS3356] 4.68.75.221 0.921 ms
6 [AS3356] 4.69.209.78 33.317 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Atlanta, 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 AS1742 at robtex.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs