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 |
|---|---|---|
| 131.215.52.15 |
0.90ms from Los Angeles,
US
|
|
| 131.215.0.0 |
0.79ms from Los Angeles,
US
|
|
| 131.215.41.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.192.82 |
0.91ms from Los Angeles,
US
|
|
| 131.215.124.24 |
0.90ms from Los Angeles,
US
|
|
| 131.215.191.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.130.3 |
0.90ms from Los Angeles,
US
|
|
| 131.215.141.220 |
0.84ms from Los Angeles,
US
|
|
| 131.215.5.209 |
0.84ms from Los Angeles,
US
|
|
| 131.215.189.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.51.11 |
0.86ms from Los Angeles,
US
|
|
| 131.215.71.254 |
0.85ms from Los Angeles,
US
|
|
| 131.215.200.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.47.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.120.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.150.1 |
0.87ms from Los Angeles,
US
|
|
| 131.215.210.224 |
0.98ms from Los Angeles,
US
|
|
| 131.215.34.89 |
0.87ms from Los Angeles,
US
|
|
| 131.215.18.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.168.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.232.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.27.1 |
0.88ms from Los Angeles,
US
|
|
| 131.215.113.144 |
0.89ms from Los Angeles,
US
|
|
| 131.215.230.2 |
1.44ms from Los Angeles,
US
|
|
| 131.215.20.166 |
0.87ms 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 |
|---|---|---|
| 84.156.1.15 |
2.62ms from Berlin,
DE
|
|
| 188.140.71.207 |
11.07ms from Braga,
PT
|
|
| 61.47.193.255 |
1.49ms from Incheon,
KR
|
|
| 45.50.72.79 |
3.20ms from Los Angeles,
US
|
|
| 130.46.106.159 |
4.70ms from Manassas,
US
|
|
| 35.137.152.127 |
4.25ms from Orlando,
US
|
|
| 61.245.209.31 |
12.75ms from Osaka,
JP
|
|
| 60.122.84.175 |
3.85ms from Osaka,
JP
|
|
| 121.100.90.255 |
2.09ms from Seoul,
KR
|
|
| 54.206.234.47 |
0.16ms from Sydney,
AU
|
|
| 99.231.143.223 |
5.43ms from Toronto,
CA
|
|
| 120.202.100.239 |
5.03ms from Wuhan,
CN
|
|
| 36.41.129.255 |
8.59ms from Xi'an,
CN
|
|
| 24.98.94.255 |
3.01ms from Atlanta,
US
|
|
| 124.205.118.159 |
3.88ms from Beijing,
CN
|
|
| 117.136.128.95 |
4.43ms from Beijing,
CN
|
|
| 35.238.38.175 |
0.40ms from Council Bluffs,
US
|
|
| 107.216.125.143 |
11.11ms from Dallas,
US
|
|
| 93.225.91.47 |
11.81ms from Frankfurt am Main,
DE
|
|
| 218.246.176.31 |
3.65ms from Harbin,
CN
|
|
| 45.125.12.239 |
1.15ms from Hong Kong,
HK
|
|
| 119.246.76.15 |
0.71ms from Hong Kong,
HK
|
|
| 59.44.198.15 |
4.98ms from Liaoyang,
CN
|
|
| 187.182.168.79 |
2.75ms from Sao Paulo,
BR
|
|
| 118.59.7.127 |
5.95ms from Seoul,
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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