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 |
|---|---|---|
| 131.215.239.27 |
1.43ms from Los Angeles,
US
|
|
| 134.4.13.10 |
1.35ms from Los Angeles,
US
|
|
| 131.215.108.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.41.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.143.36 |
0.85ms from Los Angeles,
US
|
|
| 131.215.138.5 |
0.86ms from Los Angeles,
US
|
|
| 131.215.172.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.44.13 |
0.85ms from Los Angeles,
US
|
|
| 131.215.40.71 |
0.89ms from Los Angeles,
US
|
|
| 131.215.157.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.127.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.27.17 |
0.88ms from Los Angeles,
US
|
|
| 131.215.243.254 |
1.57ms from Los Angeles,
US
|
|
| 131.215.67.175 |
0.88ms from Los Angeles,
US
|
|
| 131.215.240.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.166.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.12.175 |
0.88ms from Los Angeles,
US
|
|
| 131.215.245.254 |
1.62ms from Los Angeles,
US
|
|
| 131.215.187.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.186.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.159.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.102.45 |
0.92ms from Los Angeles,
US
|
|
| 131.215.71.5 |
0.86ms from Los Angeles,
US
|
|
| 131.215.199.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.228.7 |
0.84ms 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 |
|---|---|---|
| 223.116.72.255 |
2.90ms from Changji,
CN
|
|
| 175.154.174.143 |
3.45ms from Chengdu,
CN
|
|
| 212.116.226.207 |
0.09ms from Hong Kong,
HK
|
|
| 24.133.41.63 |
2.73ms from Istanbul,
TR
|
|
| 108.206.40.47 |
2.12ms from Miami,
US
|
|
| 100.37.131.63 |
2.10ms from New York City,
US
|
|
| 187.38.1.15 |
4.22ms from Osasco,
BR
|
|
| 158.23.49.31 |
0.17ms from Santiago de Querétaro,
MX
|
|
| 187.182.168.79 |
2.78ms from Sao Paulo,
BR
|
|
| 49.31.214.47 |
7.04ms from Seoul,
KR
|
|
| 79.184.5.63 |
2.20ms from Warsaw,
PL
|
|
| 216.212.225.143 |
14.89ms from Atlanta,
US
|
|
| 113.240.179.159 |
2.77ms from Changsha,
CN
|
|
| 187.95.96.143 |
1.79ms from Curitiba,
BR
|
|
| 99.80.88.239 |
0.32ms from Dublin,
IE
|
|
| 52.18.137.79 |
0.15ms from Dublin,
IE
|
|
| 8.208.81.79 |
0.54ms from London,
GB
|
|
| 75.241.57.63 |
17.88ms from Los Angeles,
US
|
|
| 121.227.78.255 |
4.87ms from Nanjing,
CN
|
|
| 92.169.119.111 |
2.56ms from Paris,
FR
|
|
| 174.97.224.111 |
12.14ms from Cleveland,
US
|
|
| 54.229.166.127 |
0.18ms from Dublin,
IE
|
|
| 217.95.71.63 |
1.57ms from Frankfurt am Main,
DE
|
|
| 183.232.59.47 |
3.76ms from Guangzhou,
CN
|
|
| 61.47.193.255 |
1.48ms from Incheon,
KR
|
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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