AS number details

AS1742

Harvard University  ·  harvard.edu

United States

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AS1742 – Harvard University

Field Value
Country United States
Website harvard.edu
Hosted domains 295
Number of IPv4 203,520
Number of IPv6 84,185,967,300,503,931,839,013,978,112
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
199.94.60.0/22 Harvard University 1,024
67.134.204.0/22 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
192.131.102.0/24 Harvard University 256
192.54.223.0/24 Harvard University 256
192.5.66.0/24 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
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WHOIS Details

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                                                ASHandle:       AS1742
                                                OrgID:          AS1742
                                                ASName:         AS1742
                                                ASNumber:       AS1742
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 295 domain names hosted across 54 IP addresses on this ASN.

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IP Address Domain Domains on this IP
128.103.64.94 ██████████ 103
128.103.64.74 ████████ 94
131.142.21.11 ██████████ 8
131.142.21.13 ██████████ 5
140.247.63.51 ███████ 4
65.112.0.71 ██████████ 4
140.247.173.13 ██████████ 3
140.247.173.125 █████████ 3
131.142.21.12 ██████████ 3
140.247.60.45 ██████████ 3

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Peers

There are 7 peers for this ASN.

Peers Name
AS10578 Harvard University
AS11164 Internet2
AS11537 Internet2
AS13315 Harvard Business School
AS174 Cogent Communications
AS3356 Level 3 Parent, LLC
AS40127 Longwood Medical and Academic Area (LMA)
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Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS10578 Harvard University
AS11164 Internet2
AS174 Cogent Communications
AS3356 Level 3 Parent, LLC
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ASN API ASN Database Download

Downstreams

There are 2 downstreams for this ASN.

Downstreams Name
AS13315 Harvard Business School
AS40127 Longwood Medical and Academic Area (LMA)
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ASN API ASN Database Download

Pingable IPs

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

IP Address ASN Details
140.247.111.4 AS1742 Harvard University 3.48ms from Boston, US
128.103.99.1 AS1742 Harvard University 1.17ms from Boston, US
140.247.34.97 AS1742 Harvard University 1.40ms from Boston, US
2607:fb60:0:6:23::2 AS1742 Harvard University 5.77ms from New York City, US
2607:fb60:1:311::2 AS1742 Harvard University 6.11ms from New York City, US
2607:fb60:2505:2181::4 AS1742 Harvard University 6.07ms from New York City, US
140.247.64.65 AS1742 Harvard University 1.59ms from Boston, US
128.103.204.204 AS1742 Harvard University 1.59ms from Boston, US
140.247.36.110 AS1742 Harvard University 1.33ms from Boston, US
140.247.110.57 AS1742 Harvard University 1.43ms from Boston, US
128.103.216.1 AS1742 Harvard University 1.37ms from Boston, US
2607:fb60:22:432::1 AS1742 Harvard University 6.29ms from New York City, US
131.142.21.13 AS1742 Harvard University 1.66ms from Providence, US
140.247.69.192 AS1742 Harvard University 1.34ms from Boston, US
128.103.200.161 AS1742 Harvard University 1.28ms from Boston, US
140.247.117.47 AS1742 Harvard University 1.29ms from Boston, US
140.247.204.134 AS1742 Harvard University 1.54ms from Boston, US
128.103.37.144 AS1742 Harvard University 1.23ms from Boston, US
128.103.183.1 AS1742 Harvard University 1.33ms from Boston, US
128.103.106.140 AS1742 Harvard University 1.61ms from Boston, US
140.247.149.29 AS1742 Harvard University 1.57ms from Boston, US
140.247.132.228 AS1742 Harvard University 1.26ms from Boston, US
140.247.150.131 AS1742 Harvard University 1.53ms from Boston, US
2607:fb60:5:480::2 AS1742 Harvard University 6.11ms from New York City, US
140.247.131.137 AS1742 Harvard University 5.96ms from Providence, 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
134.126.145.142 AS10357 James Madison University 4.62ms from Ashburn, US
216.226.241.254 AS12684 SES ASTRA S.A. 5.08ms from Ashburn, US
67.238.158.254 AS19901 Brightspeed 11.76ms from Atlanta, US
118.93.21.30 AS9500 One New Zealand Group Limited 3.45ms from Auckland, NZ
71.222.235.254 AS19901 Brightspeed 11.54ms from Chicago, US
108.69.236.14 AS7018 AT&T Enterprises, LLC 8.61ms from Chicago, US
62.224.212.14 AS3320 Deutsche Telekom AG 8.41ms from Frankfurt am Main, DE
189.182.118.158 AS8151 UNINET 1.04ms from Guadalajara, MX
31.16.36.254 AS3209 Vodafone GmbH 2.93ms from Hamburg, DE
14.164.89.30 AS45899 VNPT Corp 3.22ms from Ho Chi Minh City, VN
20.203.209.110 AS8075 Microsoft Corporation 0.18ms from Kloten, CH
147.148.6.126 AS2856 British Telecommunications PLC 2.69ms from London, GB
51.191.141.254 AS5607 Sky UK Limited 1.41ms from London, GB
134.59.70.254 AS2200 Renater 8.26ms from Marseille, FR
213.149.194.206 AS3302 Retelit Digital Services S.p.A. 1.85ms from Milan, IT
3.96.189.254 AS16509 Amazon.com, Inc. 0.14ms from Montreal, CA
177.191.145.14 AS53006 ALGAR TELECOM S/A 7.96ms from Osasco, BR
89.88.243.142 AS5410 Bouygues Telecom SA 6.07ms from Paris, FR
201.137.50.94 AS8151 UNINET 3.71ms from Santiago de Queretaro, MX
210.125.134.78 AS4766 Korea Telecom 6.25ms from Seoul, KR
220.228.85.254 AS9919 New Century InfoComm Tech Co., Ltd. 6.81ms from Taipei, TW
108.209.60.30 AS7018 AT&T Enterprises, LLC 4.84ms from Atlanta, US
190.120.103.14 AS28100 COOPERATIVA DE SERVICIOS PUBLICOS Y SOCIALES VILLA DEL ROSARIO LTDA 8.72ms from Buenos Aires, AR
192.30.156.254 AS27216 Air Advantage LLC 4.15ms from Detroit, US
87.181.241.238 AS3320 Deutsche Telekom AG 4.49ms 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 -f2 -m5 140.247.240.94
traceroute to 140.247.240.94 (140.247.240.94): 5 hops max, 52 byte packets
2 [AS29049] 94.20.241.9 1.025 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Baku, AZ
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.

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