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 | 79,228,162,514,264,337,593,543,950,336 |
| ASN type | Education |
| Registry | arin |
| Allocated | 41 years ago on Sep 21, 1984 |
| Updated | 2 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 |
|---|---|---|
| 131.215.237.36 |
0.87ms from Los Angeles,
US
|
|
| 134.4.54.62 |
1.12ms from Los Angeles,
US
|
|
| 134.4.25.148 |
1.08ms from Los Angeles,
US
|
|
| 131.215.66.229 |
0.86ms from Los Angeles,
US
|
|
| 131.215.245.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.0.0 |
0.79ms from Los Angeles,
US
|
|
| 131.215.42.254 |
0.89ms from Los Angeles,
US
|
|
| 134.4.36.101 |
1.39ms from Los Angeles,
US
|
|
| 131.215.28.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.33.40 |
0.84ms from Los Angeles,
US
|
|
| 131.215.159.58 |
0.88ms from Los Angeles,
US
|
|
| 131.215.239.56 |
1.44ms from Los Angeles,
US
|
|
| 131.215.166.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.168.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.143.99 |
0.87ms from Los Angeles,
US
|
|
| 131.215.23.254 |
0.93ms from Los Angeles,
US
|
|
| 131.215.109.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.65.136 |
0.88ms from Los Angeles,
US
|
|
| 131.215.75.4 |
0.91ms from Los Angeles,
US
|
|
| 131.215.27.1 |
0.88ms from Los Angeles,
US
|
|
| 131.215.11.184 |
0.86ms from Los Angeles,
US
|
|
| 131.215.196.254 |
0.86ms from Los Angeles,
US
|
|
| 131.215.211.254 |
1.49ms from Los Angeles,
US
|
|
| 131.215.123.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.138.199 |
0.86ms 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 |
|---|---|---|
| 84.173.219.95 |
3.97ms from Berlin,
DE
|
|
| 71.70.78.207 |
12.95ms from Charlotte,
US
|
|
| 69.110.168.159 |
10.72ms from Chicago,
US
|
|
| 198.181.36.31 |
0.24ms from Los Angeles,
US
|
|
| 172.10.130.239 |
8.61ms from Los Angeles,
US
|
|
| 88.164.27.207 |
13.61ms from Paris,
FR
|
|
| 100.48.88.175 |
0.46ms from Reston,
US
|
|
| 179.214.248.175 |
19.03ms from Rio de Janeiro,
BR
|
|
| 189.187.3.207 |
13.11ms from Santiago de Queretaro,
MX
|
|
| 46.176.92.207 |
5.16ms from Sofia,
BG
|
|
| 128.168.141.239 |
1.20ms from Tokyo,
JP
|
|
| 111.203.137.175 |
3.02ms from Beijing,
CN
|
|
| 23.37.192.79 |
0.32ms from Berlin,
DE
|
|
| 106.197.95.223 |
0.19ms from Chennai,
IN
|
|
| 14.7.40.15 |
2.53ms from Incheon,
KR
|
|
| 173.194.225.79 |
0.07ms from Melbourne,
AU
|
|
| 75.44.98.159 |
4.63ms from Miami,
US
|
|
| 60.122.84.175 |
3.85ms from Osaka,
JP
|
|
| 126.37.101.127 |
8.76ms from Tokyo,
JP
|
|
| 38.2.252.239 |
0.53ms from Ashburn,
US
|
|
| 110.243.82.31 |
14.69ms from Beijing,
CN
|
|
| 96.189.238.63 |
0.88ms from Chicago,
US
|
|
| 219.152.188.127 |
0.36ms from Chongqing,
CN
|
|
| 116.249.251.255 |
8.94ms from Guiyang,
CN
|
|
| 109.224.130.143 |
2.31ms from London,
GB
|
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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