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 |
|---|---|---|
| 131.215.239.27 |
1.43ms from Los Angeles,
US
|
|
| 134.4.13.10 |
1.35ms from Los Angeles,
US
|
|
| 131.215.108.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.41.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.143.36 |
0.85ms from Los Angeles,
US
|
|
| 131.215.138.5 |
0.86ms from Los Angeles,
US
|
|
| 131.215.172.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.44.13 |
0.85ms from Los Angeles,
US
|
|
| 131.215.40.71 |
0.89ms from Los Angeles,
US
|
|
| 131.215.157.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.127.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.27.17 |
0.88ms from Los Angeles,
US
|
|
| 131.215.243.254 |
1.57ms from Los Angeles,
US
|
|
| 131.215.67.175 |
0.88ms from Los Angeles,
US
|
|
| 131.215.240.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.166.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.12.175 |
0.88ms from Los Angeles,
US
|
|
| 131.215.245.254 |
1.62ms from Los Angeles,
US
|
|
| 131.215.187.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.186.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.159.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.102.45 |
0.92ms from Los Angeles,
US
|
|
| 131.215.71.5 |
0.86ms from Los Angeles,
US
|
|
| 131.215.199.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.228.7 |
0.84ms 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 |
|---|---|---|
| 45.36.140.175 |
11.43ms from Ashburn,
US
|
|
| 99.43.146.223 |
1.25ms from Ashburn,
US
|
|
| 162.203.28.63 |
10.88ms from Atlanta,
US
|
|
| 220.168.87.191 |
1.88ms from Changsha,
CN
|
|
| 64.154.22.31 |
1.04ms from Dallas,
US
|
|
| 91.194.231.255 |
4.26ms from Duesseldorf,
DE
|
|
| 95.130.253.63 |
1.03ms from Frankfurt am Main,
DE
|
|
| 78.186.185.127 |
1.42ms from Istanbul,
TR
|
|
| 88.243.38.47 |
3.57ms from Istanbul,
TR
|
|
| 31.32.153.15 |
3.44ms from Paris,
FR
|
|
| 200.141.102.143 |
1.25ms from Rio de Janeiro,
BR
|
|
| 54.116.31.255 |
0.35ms from Seoul,
KR
|
|
| 203.175.63.255 |
5.28ms from Seoul,
KR
|
|
| 52.139.255.15 |
0.46ms from Singapore,
SG
|
|
| 52.64.40.255 |
0.11ms from Sydney,
AU
|
|
| 173.33.35.15 |
1.81ms from Toronto,
CA
|
|
| 162.104.215.255 |
19.90ms from Chicago,
US
|
|
| 188.136.80.47 |
2.01ms from Duesseldorf,
DE
|
|
| 198.36.85.207 |
5.12ms from Frankfurt am Main,
DE
|
|
| 175.234.202.95 |
2.02ms from Incheon,
KR
|
|
| 58.239.149.255 |
6.93ms from Incheon,
KR
|
|
| 37.35.231.143 |
1.17ms from Madrid,
ES
|
|
| 95.20.14.207 |
1.23ms from Madrid,
ES
|
|
| 92.169.119.111 |
2.56ms from Paris,
FR
|
|
| 84.111.231.255 |
1.14ms from Petaẖ Tiqva,
IL
|
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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