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 |
|---|---|---|
| 131.215.150.1 |
0.86ms from Los Angeles,
US
|
|
| 131.215.102.254 |
0.93ms from Los Angeles,
US
|
|
| 131.215.241.78 |
0.86ms from Los Angeles,
US
|
|
| 131.215.125.201 |
0.86ms from Los Angeles,
US
|
|
| 131.215.21.226 |
0.86ms from Los Angeles,
US
|
|
| 131.215.44.13 |
0.87ms from Los Angeles,
US
|
|
| 131.215.13.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.15.208 |
0.86ms from Los Angeles,
US
|
|
| 131.215.139.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.101.125 |
0.84ms from Los Angeles,
US
|
|
| 192.31.43.17 |
0.78ms from Los Angeles,
US
|
|
| 131.215.77.254 |
0.94ms from Los Angeles,
US
|
|
| 131.215.192.82 |
0.91ms from Los Angeles,
US
|
|
| 131.215.240.69 |
1.51ms from Los Angeles,
US
|
|
| 131.215.201.254 |
0.93ms from Los Angeles,
US
|
|
| 131.215.202.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.227.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.229.109 |
1.57ms from Los Angeles,
US
|
|
| 131.215.50.223 |
0.86ms from Los Angeles,
US
|
|
| 131.215.26.47 |
0.85ms from Los Angeles,
US
|
|
| 131.215.231.36 |
0.87ms from Los Angeles,
US
|
|
| 131.215.2.207 |
0.87ms from Los Angeles,
US
|
|
| 131.215.154.33 |
0.89ms from Los Angeles,
US
|
|
| 131.215.103.16 |
0.86ms from Los Angeles,
US
|
|
| 131.215.142.82 |
0.88ms 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 |
|---|---|---|
| 141.237.158.95 |
5.14ms from Athens,
GR
|
|
| 61.1.55.239 |
14.43ms from Bengaluru,
IN
|
|
| 24.62.170.95 |
6.98ms from Boston,
US
|
|
| 125.209.42.255 |
1.52ms from Incheon,
KR
|
|
| 20.9.140.47 |
0.77ms from Quincy,
US
|
|
| 198.154.229.95 |
2.05ms from Salt Lake City,
US
|
|
| 18.140.254.79 |
0.11ms from Singapore,
SG
|
|
| 1.94.165.191 |
2.91ms from Suzhou,
CN
|
|
| 111.220.199.191 |
1.49ms from Sydney,
AU
|
|
| 36.234.136.15 |
1.25ms from Taichung,
TW
|
|
| 77.242.57.95 |
0.97ms from Tbilisi,
GE
|
|
| 13.231.224.63 |
0.26ms from Tokyo,
JP
|
|
| 121.192.132.191 |
19.37ms from Wuhan,
CN
|
|
| 51.96.41.63 |
0.40ms from Zuerich,
CH
|
|
| 147.90.4.15 |
0.15ms from Amsterdam,
NL
|
|
| 52.147.199.63 |
0.43ms from Ashburn,
US
|
|
| 78.188.181.79 |
1.47ms from Istanbul,
TR
|
|
| 5.133.186.47 |
0.75ms from London,
GB
|
|
| 82.18.33.223 |
8.52ms from Maidenhead,
GB
|
|
| 73.84.32.47 |
5.32ms from Miami,
US
|
|
| 64.43.78.191 |
0.11ms from Milan,
IT
|
|
| 107.22.23.239 |
0.40ms from Reston,
US
|
|
| 13.239.51.63 |
0.11ms from Sydney,
AU
|
|
| 13.95.1.47 |
0.28ms from Amsterdam,
NL
|
|
| 99.43.146.223 |
1.31ms from Ashburn,
US
|
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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