AS1742
Harvard University · harvard.edu
United States
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| Field | Value |
|---|---|
| Country |
United States
|
| Website | harvard.edu |
| Hosted domains | 292 |
| IPv4 addresses | 203,520 |
| IPv6 addresses | 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 |
| 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 |
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 292 domain names hosted across 55 IP addresses on this ASN.
| 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 |
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) |
Downstreams
There are 2 downstreams for this ASN.
Pingable IPs
240 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 128.103.250.193 |
1.38ms from Boston,
US
|
|
| 128.103.92.1 |
1.30ms from Boston,
US
|
|
| 128.103.203.241 |
1.42ms from Boston,
US
|
|
| 131.142.198.127 |
1.58ms from Boston,
US
|
|
| 128.103.173.167 |
1.46ms from Boston,
US
|
|
| 140.247.78.39 |
1.25ms from Boston,
US
|
|
| 2607:fb60:37:1::1 |
5.58ms from New York City,
US
|
|
| 2607:fb60:2406:8::1019 |
6.76ms from New York City,
US
|
|
| 2607:fb60:a:1::d |
5.39ms from New York City,
US
|
|
| 140.247.16.98 |
1.35ms from Boston,
US
|
|
| 140.247.65.14 |
1.52ms from Boston,
US
|
|
| 128.103.180.1 |
1.32ms from Boston,
US
|
|
| 140.247.26.72 |
1.53ms from Boston,
US
|
|
| 140.247.117.47 |
1.25ms from Boston,
US
|
|
| 128.103.246.1 |
1.31ms from Boston,
US
|
|
| 128.103.230.1 |
1.20ms from Boston,
US
|
|
| 128.103.137.1 |
1.10ms from Boston,
US
|
|
| 140.247.166.184 |
1.36ms from Boston,
US
|
|
| 140.247.129.11 |
1.74ms from Boston,
US
|
|
| 140.247.232.18 |
1.27ms from Boston,
US
|
|
| 140.247.69.193 |
1.27ms from Boston,
US
|
|
| 128.103.208.1 |
1.20ms from Boston,
US
|
|
| 128.103.184.1 |
1.31ms from Boston,
US
|
|
| 128.103.84.1 |
1.51ms from Boston,
US
|
|
| 140.247.84.36 |
1.26ms 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 |
|---|---|---|
| 44.193.139.206 |
0.47ms from Ashburn,
US
|
|
| 146.20.185.126 |
0.57ms from Ashburn,
US
|
|
| 40.76.87.94 |
0.47ms from Ashburn,
US
|
|
| 66.172.90.254 |
7.24ms from Atlanta,
US
|
|
| 86.124.18.94 |
0.62ms from Bucharest,
RO
|
|
| 219.153.212.158 |
6.86ms from Chongqing,
CN
|
|
| 186.233.154.254 |
7.09ms from Curitiba,
BR
|
|
| 24.155.79.254 |
6.59ms from Dallas,
US
|
|
| 73.153.148.78 |
6.42ms from Denver,
US
|
|
| 103.126.159.254 |
0.70ms from Hanoi,
VN
|
|
| 147.139.162.14 |
0.67ms from Jakarta,
ID
|
|
| 92.176.130.254 |
11.89ms from Madrid,
ES
|
|
| 45.140.163.254 |
8.35ms from Madrid,
ES
|
|
| 218.226.68.110 |
3.29ms from Osaka,
JP
|
|
| 177.9.174.142 |
1.55ms from São Paulo,
BR
|
|
| 59.147.164.222 |
4.54ms from Tokyo,
JP
|
|
| 213.184.101.254 |
3.25ms from Amsterdam,
NL
|
|
| 75.165.183.254 |
8.46ms from Ashburn,
US
|
|
| 203.185.127.222 |
0.92ms from Bangkok,
TH
|
|
| 203.143.20.126 |
3.72ms from Colombo,
LK
|
|
| 3.126.127.46 |
0.17ms from Frankfurt am Main,
DE
|
|
| 219.76.158.254 |
1.39ms from Hong Kong,
HK
|
|
| 194.26.108.254 |
0.24ms from Istanbul,
TR
|
|
| 105.27.174.46 |
1.04ms from Johannesburg,
ZA
|
|
| 86.111.65.30 |
7.31ms from Kyiv,
UA
|
Traceroute
Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.
IPinfo ProbeNet
in Auckland, NZ
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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