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 |
|---|---|---|
| 131.215.177.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.184.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.43.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.25.166 |
0.84ms from Los Angeles,
US
|
|
| 131.215.153.150 |
0.90ms from Los Angeles,
US
|
|
| 131.215.167.254 |
0.90ms from Los Angeles,
US
|
|
| 134.4.127.12 |
0.77ms from Los Angeles,
US
|
|
| 131.215.48.16 |
0.86ms from Los Angeles,
US
|
|
| 131.215.193.129 |
0.88ms from Los Angeles,
US
|
|
| 131.215.31.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.228.150 |
0.86ms from Los Angeles,
US
|
|
| 131.215.70.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.3.174 |
0.90ms from Los Angeles,
US
|
|
| 131.215.134.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.5.244 |
0.85ms from Los Angeles,
US
|
|
| 131.215.27.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.150.1 |
0.87ms from Los Angeles,
US
|
|
| 131.215.118.254 |
0.86ms from Los Angeles,
US
|
|
| 131.215.59.216 |
0.93ms from Los Angeles,
US
|
|
| 131.215.71.5 |
0.86ms from Los Angeles,
US
|
|
| 131.215.28.212 |
0.94ms from Los Angeles,
US
|
|
| 131.215.109.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.50.223 |
0.88ms from Los Angeles,
US
|
|
| 131.215.144.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.156.254 |
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 |
|---|---|---|
| 20.246.54.31 |
0.79ms from Boydton,
US
|
|
| 34.77.228.47 |
0.13ms from Brussels,
BE
|
|
| 175.154.174.143 |
3.47ms from Chengdu,
CN
|
|
| 187.95.96.143 |
1.74ms from Curitiba,
BR
|
|
| 78.51.175.47 |
2.77ms from Frankfurt am Main,
DE
|
|
| 116.21.182.127 |
4.27ms from Guangzhou,
CN
|
|
| 14.241.175.31 |
2.04ms from Ho Chi Minh City,
VN
|
|
| 41.30.109.191 |
13.74ms from Johannesburg,
ZA
|
|
| 68.47.231.15 |
6.33ms from Murfreesboro,
US
|
|
| 177.106.62.111 |
9.73ms from Osasco,
BR
|
|
| 80.14.176.191 |
1.67ms from Paris,
FR
|
|
| 3.227.201.255 |
0.27ms from Reston,
US
|
|
| 58.146.247.15 |
5.15ms from Seoul,
KR
|
|
| 116.87.44.79 |
1.61ms from Singapore,
SG
|
|
| 113.235.131.127 |
7.98ms from Tieling,
CN
|
|
| 3.115.123.255 |
0.27ms from Tokyo,
JP
|
|
| 27.116.11.207 |
10.17ms from Tokyo,
JP
|
|
| 23.58.128.207 |
0.53ms from Atlanta,
US
|
|
| 18.237.226.255 |
0.32ms from Boardman,
US
|
|
| 27.57.37.175 |
10.99ms from Chennai,
IN
|
|
| 61.1.134.15 |
19.82ms from Chennai,
IN
|
|
| 182.217.138.79 |
3.43ms from Incheon,
KR
|
|
| 82.30.47.207 |
9.63ms from London,
GB
|
|
| 73.205.149.239 |
5.91ms from Miami,
US
|
|
| 60.122.84.175 |
3.77ms from Osaka,
JP
|
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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