AS number details

AS1742

Harvard University  ·  harvard.edu

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AS1742 – Harvard University

Field Value
Country United States
Website harvard.edu
Hosted domains 315
Number of IPv4 203,520
Number of IPv6 84,490,616,607,046,818,391,039,934,464
ASN type Education
Registry arin
Allocated 32 years ago on Feb 19, 1992
Updated 6 months ago on Dec 21, 2023
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
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
199.94.60.0/22 Harvard University 1,024
65.112.0.0/20 CenturyLink Communications, LLC 4,096
67.134.204.0/22 CenturyLink Communications, LLC 1,024
Netblock Company
2602:fca9::/36 Harvard University
2607:fb60:2400::/40 Harvard University
2607:fb60::/32 Harvard University
2620:32:8000::/48 Smithsonian Astrophysical Observatory
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WHOIS Details


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 315 domain names hosted across 63 IP addresses on this ASN.

IP Address Domain Domains on this IP
128.103.64.94 ██████████ 99
128.103.64.74 ████████ 92
199.94.63.6 ██████████ 10
131.142.21.11 ██████████ 8
140.247.177.93 ██████████ 8
131.142.21.13 ██████████ 8
140.247.151.161 ██████████ 5
140.247.63.51 ███████ 4
140.247.89.135 █████████ 3
140.247.200.140 ██████████ 3

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Useful for Cybersecurity

Peers

There are 8 peers for this ASN.

Peers Name
AS10578 Harvard University
AS11164 Internet2
AS11537 Internet2
AS1239 Sprint
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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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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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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