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 | ██████████ | 10 |
| 131.215.140.111 | ██████████ | 6 |
| 134.4.74.17 | ██████████ | 6 |
| 131.215.198.54 | ██████████ | 5 |
| 131.215.5.239 | ██████████ | 4 |
| 131.215.66.188 | ██████████ | 3 |
| 131.215.176.71 | ██████████ | 3 |
| 131.215.113.72 | ██████████ | 3 |
| 131.215.65.68 | ██████████ | 2 |
| 131.215.207.200 | ██████████ | 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 |
|---|---|---|
| 131.215.196.2 |
0.86ms from Los Angeles,
US
|
|
| 131.215.4.183 |
0.89ms from Los Angeles,
US
|
|
| 131.215.234.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.220.77 |
0.76ms from Los Angeles,
US
|
|
| 131.215.14.152 |
0.87ms from Los Angeles,
US
|
|
| 131.215.0.1 |
0.78ms from Los Angeles,
US
|
|
| 131.215.25.166 |
0.84ms from Los Angeles,
US
|
|
| 131.215.7.183 |
0.91ms from Los Angeles,
US
|
|
| 131.215.132.138 |
0.86ms from Los Angeles,
US
|
|
| 134.4.59.21 |
1.31ms from Los Angeles,
US
|
|
| 131.215.41.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.54.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.52.218 |
0.91ms from Los Angeles,
US
|
|
| 131.215.135.186 |
0.88ms from Los Angeles,
US
|
|
| 131.215.109.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.57.254 |
0.95ms from Los Angeles,
US
|
|
| 131.215.152.254 |
0.93ms from Los Angeles,
US
|
|
| 131.215.199.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.224.254 |
0.90ms from Los Angeles,
US
|
|
| 192.41.208.49 |
0.87ms from Los Angeles,
US
|
|
| 131.215.96.194 |
0.91ms from Los Angeles,
US
|
|
| 131.215.47.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.170.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.238.190 |
0.89ms from Los Angeles,
US
|
|
| 134.4.33.93 |
1.12ms 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 |
|---|---|---|
| 174.55.117.15 |
16.54ms from Ashburn,
US
|
|
| 74.214.5.63 |
6.80ms from Atlanta,
US
|
|
| 117.242.101.191 |
11.92ms from Bengaluru,
IN
|
|
| 73.34.19.175 |
2.20ms from Denver,
US
|
|
| 79.227.247.63 |
5.77ms from Duesseldorf,
DE
|
|
| 93.232.174.47 |
7.83ms from Frankfurt am Main,
DE
|
|
| 82.18.33.223 |
6.62ms from London,
GB
|
|
| 152.166.172.191 |
2.73ms from Santo Domingo,
DO
|
|
| 113.131.232.15 |
8.34ms from Seoul,
KR
|
|
| 118.77.47.239 |
7.45ms from Taiyuan,
CN
|
|
| 176.22.227.111 |
1.21ms from Copenhagen,
DK
|
|
| 107.216.125.143 |
10.32ms from Dallas,
US
|
|
| 115.207.211.223 |
7.57ms from Hangzhou,
CN
|
|
| 27.126.225.63 |
1.24ms from Hong Kong,
HK
|
|
| 78.188.181.79 |
1.27ms from Istanbul,
TR
|
|
| 217.45.97.207 |
6.35ms from London,
GB
|
|
| 34.186.175.191 |
0.11ms from Los Angeles,
US
|
|
| 102.158.36.95 |
16.86ms from Marseille,
FR
|
|
| 200.40.21.15 |
1.31ms from Montevideo,
UY
|
|
| 121.227.78.255 |
4.89ms from Nanjing,
CN
|
|
| 112.232.146.111 |
5.87ms from Qingdao,
CN
|
|
| 52.120.119.15 |
0.55ms from San Jose,
US
|
|
| 83.5.13.95 |
2.76ms from Warsaw,
PL
|
|
| 155.141.199.31 |
0.66ms from Atlanta,
US
|
|
| 187.95.96.143 |
1.74ms from Curitiba,
BR
|
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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