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 | 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 |
|---|---|---|
| 131.215.105.254 |
0.86ms from Los Angeles,
US
|
|
| 131.215.142.77 |
0.87ms from Los Angeles,
US
|
|
| 131.215.119.183 |
0.88ms from Los Angeles,
US
|
|
| 131.215.65.136 |
0.84ms from Los Angeles,
US
|
|
| 131.215.11.184 |
0.86ms from Los Angeles,
US
|
|
| 131.215.218.254 |
0.82ms from Los Angeles,
US
|
|
| 131.215.14.152 |
0.86ms from Los Angeles,
US
|
|
| 134.4.54.202 |
1.18ms from Los Angeles,
US
|
|
| 131.215.112.140 |
0.85ms from Los Angeles,
US
|
|
| 131.215.254.254 |
0.86ms from Los Angeles,
US
|
|
| 131.215.71.5 |
0.86ms from Los Angeles,
US
|
|
| 131.215.154.199 |
0.90ms from Los Angeles,
US
|
|
| 131.215.243.254 |
1.55ms from Los Angeles,
US
|
|
| 131.215.6.30 |
0.90ms from Los Angeles,
US
|
|
| 131.215.194.23 |
0.87ms from Los Angeles,
US
|
|
| 131.215.100.25 |
0.90ms from Los Angeles,
US
|
|
| 131.215.51.11 |
0.86ms from Los Angeles,
US
|
|
| 131.215.140.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.144.254 |
0.87ms from Los Angeles,
US
|
|
| 134.4.32.74 |
1.36ms from Los Angeles,
US
|
|
| 131.215.196.2 |
0.87ms from Los Angeles,
US
|
|
| 192.31.43.17 |
0.81ms from Los Angeles,
US
|
|
| 131.215.207.7 |
0.85ms from Los Angeles,
US
|
|
| 131.215.10.17 |
0.77ms from Los Angeles,
US
|
|
| 131.215.158.171 |
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 |
|---|---|---|
| 40.114.235.127 |
0.22ms from Amsterdam,
NL
|
|
| 66.31.164.175 |
5.63ms from Boston,
US
|
|
| 195.228.198.15 |
0.45ms from Budapest,
HU
|
|
| 77.111.155.223 |
9.65ms from Budapest,
HU
|
|
| 201.178.94.143 |
4.82ms from Buenos Aires,
AR
|
|
| 41.85.14.31 |
1.34ms from Cape Town,
ZA
|
|
| 63.229.225.79 |
8.87ms from Denver,
US
|
|
| 38.58.213.207 |
17.01ms from Denver,
US
|
|
| 162.254.253.127 |
0.08ms from Detroit,
US
|
|
| 14.241.175.31 |
2.15ms from Ho Chi Minh City,
VN
|
|
| 116.121.12.47 |
1.42ms from Incheon,
KR
|
|
| 15.216.62.143 |
6.08ms from Madrid,
ES
|
|
| 83.52.246.255 |
8.58ms from Madrid,
ES
|
|
| 13.122.81.95 |
0.64ms from Madrid,
ES
|
|
| 200.40.21.15 |
1.33ms from Montevideo,
UY
|
|
| 31.57.159.79 |
0.38ms from Moscow,
RU
|
|
| 194.125.227.15 |
16.07ms from Moscow,
RU
|
|
| 37.23.217.159 |
5.64ms from Novosibirsk,
RU
|
|
| 87.164.16.239 |
2.14ms from Nuernberg,
DE
|
|
| 221.171.229.15 |
11.12ms from Osaka,
JP
|
|
| 179.160.88.79 |
2.75ms from Osasco,
BR
|
|
| 45.85.18.143 |
6.46ms from Rome,
IT
|
|
| 79.41.50.191 |
7.47ms from Rome,
IT
|
|
| 157.136.250.223 |
1.49ms from Saint-Denis,
FR
|
|
| 52.120.119.15 |
0.62ms from San Jose,
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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