AS31
California Institute of Technology · caltech.edu
United States
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| Field | Value |
|---|---|
| Country |
United States
|
| Website | caltech.edu |
| Hosted domains | 95 |
| IPv4 addresses | 131,840 |
| IPv6 addresses | 79,228,162,514,264,338,000,000,000,000 |
| ASN type | Education |
| Registry | arin |
| Allocated | 42 years ago on Sep 21, 1984 |
| Updated | 3 years ago on Aug 29, 2023 |
IP Ranges
| Netblock | Company | Num of IPs |
|---|---|---|
| 131.215.0.0/16 | California Institute of Technology | 65,536 |
| 134.4.0.0/16 | California Institute of Technology | 65,536 |
| 131.215.242.0/23 | California Institute of Technology | 512 |
| 131.215.244.0/23 | California Institute of Technology | 512 |
| 131.215.229.0/24 | California Institute of Technology | 256 |
| 131.215.230.0/24 | California Institute of Technology | 256 |
| 131.215.234.0/24 | California Institute of Technology | 256 |
| 131.215.239.0/24 | California Institute of Technology | 256 |
| 131.215.240.0/24 | California Institute of Technology | 256 |
| 192.12.19.0/24 | California Institute of Technology | 256 |
| 192.31.43.0/24 | California Institute of Technology | 256 |
| 192.41.208.0/24 | California Institute of Technology | 256 |
| Netblock | Company |
|---|---|
| 2607:f520::/32 | California Institute of Technology |
WHOIS Details
ASHandle: AS31
OrgID: AS31
ASName: AS31
ASNumber: AS31
RegDate: 0000-00-00
Updated: 0000-00-00
TechHandle: AA00-AAAA
Source: AAAA
Hosted Domains
There are 95 domain names hosted across 55 IP addresses on this ASN.
| IP Address | Domain | Domains on this IP |
|---|---|---|
| 131.215.242.9 | ██████████ | 11 |
| 131.215.140.111 | ██████████ | 6 |
| 134.4.74.17 | ██████████ | 6 |
| 131.215.198.54 | ██████████ | 5 |
| 131.215.76.24 | ██████████ | 3 |
| 131.215.176.71 | ██████████ | 3 |
| 131.215.66.188 | ██████████ | 3 |
| 131.215.113.72 | ██████████ | 3 |
| 131.215.5.239 | ██████████ | 3 |
| 131.215.140.234 | ██████████ | 2 |
Peers
There are 3 peers for this ASN.
Upstreams
There are 2 upstreams for this ASN.
Downstreams
There are no downstreams for this ASN.
Pingable IPs
188 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 131.215.15.208 |
0.90ms from Los Angeles,
US
|
|
| 131.215.112.140 |
0.90ms from Los Angeles,
US
|
|
| 192.31.43.17 |
0.82ms from Los Angeles,
US
|
|
| 134.4.57.210 |
1.40ms from Los Angeles,
US
|
|
| 131.215.144.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.198.41 |
0.89ms from Los Angeles,
US
|
|
| 131.215.229.254 |
1.48ms from Los Angeles,
US
|
|
| 131.215.62.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.124.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.132.131 |
0.93ms from Los Angeles,
US
|
|
| 131.215.138.144 |
0.88ms from Los Angeles,
US
|
|
| 131.215.211.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.239.124 |
1.43ms from Los Angeles,
US
|
|
| 131.215.125.202 |
0.86ms from Los Angeles,
US
|
|
| 131.215.169.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.220.4 |
0.80ms from Los Angeles,
US
|
|
| 131.215.2.207 |
0.88ms from Los Angeles,
US
|
|
| 134.4.32.74 |
1.40ms from Los Angeles,
US
|
|
| 131.215.4.183 |
0.91ms from Los Angeles,
US
|
|
| 131.215.242.16 |
1.51ms from Los Angeles,
US
|
|
| 131.215.157.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.31.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.7.22 |
0.93ms from Los Angeles,
US
|
|
| 131.215.71.5 |
0.88ms from Los Angeles,
US
|
|
| 134.4.25.148 |
1.10ms from Los Angeles,
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 |
|---|---|---|
| 71.70.78.207 |
15.67ms from Atlanta,
US
|
|
| 73.218.25.15 |
12.12ms from Boston,
US
|
|
| 91.180.183.47 |
2.30ms from Brussels,
BE
|
|
| 138.68.69.111 |
0.32ms from Frankfurt am Main,
DE
|
|
| 73.166.16.191 |
7.48ms from Houston,
US
|
|
| 35.179.181.191 |
0.53ms from London,
GB
|
|
| 143.14.119.175 |
0.65ms from Los Angeles,
US
|
|
| 5.225.71.175 |
3.90ms from Madrid,
ES
|
|
| 76.148.8.239 |
3.84ms from Miami,
US
|
|
| 124.133.191.63 |
5.85ms from Qingdao,
CN
|
|
| 165.98.143.255 |
17.79ms from San Pedro Sula,
HN
|
|
| 223.135.91.207 |
1.81ms from Tokyo,
JP
|
|
| 156.204.214.207 |
2.76ms from Cairo,
EG
|
|
| 143.137.76.255 |
4.27ms from Campina Grande,
BR
|
|
| 208.119.1.63 |
16.79ms from Indianapolis,
US
|
|
| 45.47.137.47 |
12.84ms from New York City,
US
|
|
| 68.194.216.63 |
8.88ms from New York City,
US
|
|
| 98.118.154.191 |
8.91ms from New York City,
US
|
|
| 73.104.29.95 |
7.38ms from Orlando,
US
|
|
| 98.248.195.15 |
7.70ms from San Jose,
US
|
|
| 111.246.184.95 |
2.26ms from Taichung,
TW
|
|
| 86.92.156.207 |
0.96ms from Amsterdam,
NL
|
|
| 119.249.245.143 |
8.41ms from Beijing,
CN
|
|
| 101.22.36.207 |
6.43ms from Beijing,
CN
|
|
| 104.182.242.63 |
7.71ms from Chicago,
US
|
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 AS31 at robtex.
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