AS1742
Harvard University · harvard.edu
United States
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| 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 |
WHOIS Details
ASHandle: AS1742
OrgID: AS1742
ASName: AS1742
ASNumber: AS1742
RegDate: 0000-00-00
Updated: 0000-00-00
TechHandle: AA00-AAAA
Source: AAAA
Hosted Domains
There are 295 domain names hosted across 54 IP addresses on this ASN.
| 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 |
| 140.247.63.234 | ████████ | 3 |
| 128.103.109.12 | ██████████ | 3 |
| 131.142.21.12 | ██████████ | 3 |
| 140.247.173.125 | █████████ | 3 |
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) |
Downstreams
There are 2 downstreams for this ASN.
Pingable IPs
244 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 140.247.220.142 |
6.48ms from Boston,
US
|
|
| 140.247.25.65 |
1.23ms from Boston,
US
|
|
| 2607:fb60:21:360::154 |
6.17ms from New York City,
US
|
|
| 128.103.155.5 |
2.01ms from Providence,
US
|
|
| 128.103.101.1 |
1.45ms from Boston,
US
|
|
| 199.94.62.3 |
4.05ms from Boston,
US
|
|
| 140.247.119.120 |
1.32ms from Boston,
US
|
|
| 140.247.80.216 |
1.47ms from Boston,
US
|
|
| 140.247.210.62 |
1.66ms from Boston,
US
|
|
| 128.103.146.1 |
1.53ms from Boston,
US
|
|
| 140.247.150.131 |
1.76ms from Boston,
US
|
|
| 2607:fb60:e:c::1 |
6.09ms from New York City,
US
|
|
| 140.247.131.41 |
1.57ms from Boston,
US
|
|
| 140.247.200.219 |
1.46ms from Boston,
US
|
|
| 140.247.209.120 |
1.60ms from Boston,
US
|
|
| 128.103.184.1 |
1.36ms from Boston,
US
|
|
| 140.247.106.228 |
1.34ms from Boston,
US
|
|
| 128.103.84.100 |
1.40ms from Boston,
US
|
|
| 2607:fb60:1:421::2 |
6.08ms from New York City,
US
|
|
| 140.247.173.125 |
1.91ms from Providence,
US
|
|
| 128.103.69.190 |
1.88ms from Providence,
US
|
|
| 131.142.195.61 |
1.84ms from Providence,
US
|
|
| 140.247.108.230 |
1.45ms from Boston,
US
|
|
| 128.103.175.1 |
1.25ms from Boston,
US
|
|
| 140.247.123.132 |
1.33ms 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 |
|---|---|---|
| 147.95.136.254 |
5.72ms from Athens,
GR
|
|
| 104.59.18.46 |
4.12ms from Atlanta,
US
|
|
| 190.103.1.238 |
2.32ms from Buenos Aires,
AR
|
|
| 154.178.19.206 |
3.23ms from Cairo,
EG
|
|
| 27.12.158.30 |
2.13ms from Chongqing,
CN
|
|
| 103.90.0.254 |
3.27ms from Dhaka,
BD
|
|
| 201.159.160.142 |
7.07ms from Fortaleza,
BR
|
|
| 119.237.42.254 |
0.73ms from Hong Kong,
HK
|
|
| 219.76.158.254 |
1.41ms from Hong Kong,
HK
|
|
| 60.50.163.254 |
1.51ms from Kuala Lumpur,
MY
|
|
| 213.159.251.254 |
0.60ms from Kyiv,
UA
|
|
| 45.143.20.254 |
1.77ms from Moscow,
RU
|
|
| 212.103.123.254 |
8.67ms from Moscow,
RU
|
|
| 71.167.253.126 |
3.12ms from New York City,
US
|
|
| 200.229.81.62 |
19.21ms from Osasco,
BR
|
|
| 93.184.125.30 |
5.32ms from Oslo,
NO
|
|
| 190.219.227.206 |
8.88ms from Panama,
PA
|
|
| 34.1.3.94 |
0.10ms from Paris,
FR
|
|
| 50.47.159.46 |
1.02ms from Portland,
US
|
|
| 72.107.38.110 |
13.34ms from San Jose,
US
|
|
| 182.172.141.142 |
2.45ms from Seoul,
KR
|
|
| 3.37.176.206 |
0.20ms from Seoul,
KR
|
|
| 141.164.63.254 |
0.20ms from Seoul,
KR
|
|
| 115.89.153.30 |
1.84ms from Seoul,
KR
|
|
| 139.199.105.174 |
5.09ms from Tianjin,
CN
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.
IPinfo ProbeNet
in Amsterdam, NL
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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