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 |
|---|---|---|
| 134.4.10.130 |
1.34ms from Los Angeles,
US
|
|
| 131.215.210.224 |
1.00ms from Los Angeles,
US
|
|
| 131.215.139.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.59.211 |
0.94ms from Los Angeles,
US
|
|
| 131.215.241.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.70.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.239.124 |
1.43ms from Los Angeles,
US
|
|
| 131.215.195.86 |
0.89ms from Los Angeles,
US
|
|
| 131.215.211.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.58.254 |
0.95ms from Los Angeles,
US
|
|
| 131.215.132.131 |
0.93ms from Los Angeles,
US
|
|
| 131.215.150.1 |
0.89ms from Los Angeles,
US
|
|
| 131.215.62.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.104.254 |
0.87ms from Los Angeles,
US
|
|
| 134.4.36.102 |
1.15ms from Los Angeles,
US
|
|
| 131.215.30.6 |
0.90ms from Los Angeles,
US
|
|
| 131.215.236.254 |
0.94ms from Los Angeles,
US
|
|
| 131.215.108.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.31.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.144.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.5.193 |
0.87ms from Los Angeles,
US
|
|
| 134.4.25.148 |
1.10ms from Los Angeles,
US
|
|
| 131.215.190.254 |
0.94ms from Los Angeles,
US
|
|
| 131.215.184.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.77.254 |
0.93ms 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 |
|---|---|---|
| 47.222.46.111 |
1.27ms from Dallas,
US
|
|
| 75.244.148.159 |
16.68ms from Dallas,
US
|
|
| 67.102.163.159 |
0.22ms from Frankfurt am Main,
DE
|
|
| 73.166.16.191 |
7.48ms from Houston,
US
|
|
| 143.14.119.175 |
0.65ms from Los Angeles,
US
|
|
| 88.12.189.207 |
1.02ms from Madrid,
ES
|
|
| 139.103.65.159 |
15.70ms from Montreal,
CA
|
|
| 98.248.195.15 |
7.70ms from San Jose,
US
|
|
| 187.171.249.239 |
9.32ms from Santiago de Queretaro,
MX
|
|
| 158.23.49.31 |
0.16ms from Santiago de Querétaro,
MX
|
|
| 183.104.131.223 |
7.40ms from Seoul,
KR
|
|
| 115.14.49.143 |
8.59ms from Seoul,
KR
|
|
| 18.140.19.239 |
0.16ms from Singapore,
SG
|
|
| 140.133.13.175 |
3.66ms from Taichung,
TW
|
|
| 122.121.38.95 |
5.22ms from Taichung,
TW
|
|
| 122.139.235.15 |
3.15ms from Changchun,
CN
|
|
| 184.55.147.175 |
8.99ms from Chicago,
US
|
|
| 92.114.215.15 |
4.08ms from Chisinau,
MD
|
|
| 3.23.82.63 |
0.16ms from Columbus,
US
|
|
| 3.66.128.239 |
0.15ms from Frankfurt am Main,
DE
|
|
| 117.123.57.239 |
2.16ms from Incheon,
KR
|
|
| 86.168.232.15 |
2.96ms from London,
GB
|
|
| 94.5.54.223 |
3.40ms from London,
GB
|
|
| 81.33.89.63 |
1.48ms from Madrid,
ES
|
|
| 157.88.38.223 |
3.02ms from Madrid,
ES
|
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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