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
178 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.
| IP Address | ASN | Details |
|---|---|---|
| 131.215.54.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.114.14 |
0.87ms from Los Angeles,
US
|
|
| 131.215.226.135 |
0.87ms from Los Angeles,
US
|
|
| 131.215.184.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.186.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.227.24 |
0.88ms from Los Angeles,
US
|
|
| 131.215.253.245 |
0.78ms from Los Angeles,
US
|
|
| 131.215.202.179 |
0.90ms from Los Angeles,
US
|
|
| 131.215.33.26 |
0.85ms from Los Angeles,
US
|
|
| 131.215.11.184 |
0.86ms from Los Angeles,
US
|
|
| 131.215.56.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.57.254 |
0.95ms from Los Angeles,
US
|
|
| 131.215.161.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.224.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.193.129 |
0.88ms from Los Angeles,
US
|
|
| 131.215.118.254 |
0.86ms from Los Angeles,
US
|
|
| 131.215.231.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.211.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.124.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.144.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.130.3 |
0.88ms from Los Angeles,
US
|
|
| 131.215.127.229 |
0.88ms from Los Angeles,
US
|
|
| 192.31.43.17 |
0.79ms from Los Angeles,
US
|
|
| 131.215.166.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.96.194 |
0.91ms 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 |
|---|---|---|
| 154.242.74.111 |
13.24ms from Algiers,
DZ
|
|
| 68.35.21.207 |
11.01ms from Atlanta,
US
|
|
| 89.245.44.223 |
2.33ms from Berlin,
DE
|
|
| 73.159.168.31 |
9.19ms from Boston,
US
|
|
| 104.205.57.95 |
0.92ms from Calgary,
CA
|
|
| 51.140.222.143 |
0.20ms from Cardiff,
GB
|
|
| 76.52.248.255 |
12.71ms from Charlotte,
US
|
|
| 184.85.123.239 |
0.17ms from Hong Kong,
HK
|
|
| 82.191.81.207 |
3.94ms from Milan,
IT
|
|
| 31.57.159.79 |
0.36ms from Moscow,
RU
|
|
| 133.159.78.111 |
0.76ms from Osaka,
JP
|
|
| 90.59.249.223 |
8.52ms from Paris,
FR
|
|
| 3.227.201.255 |
0.27ms from Reston,
US
|
|
| 189.230.206.191 |
15.40ms from Santiago de Queretaro,
MX
|
|
| 85.128.226.207 |
0.35ms from Sao Paulo,
BR
|
|
| 13.33.91.239 |
0.15ms from Singapore,
SG
|
|
| 111.220.199.191 |
1.63ms from Sydney,
AU
|
|
| 80.121.50.95 |
2.30ms from Vienna,
AT
|
|
| 175.154.174.143 |
3.47ms from Chengdu,
CN
|
|
| 86.169.210.111 |
10.68ms from Erith,
GB
|
|
| 109.224.130.143 |
2.24ms from Erith,
GB
|
|
| 185.246.246.239 |
0.23ms from Frankfurt am Main,
DE
|
|
| 115.200.167.239 |
6.78ms from Hangzhou,
CN
|
|
| 5.65.211.95 |
4.17ms from London,
GB
|
|
| 88.9.137.127 |
9.18ms 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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