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 | 41 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 |
|---|---|---|
| 131.215.28.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.26.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.148.97 |
0.82ms from Los Angeles,
US
|
|
| 131.215.103.16 |
0.85ms from Los Angeles,
US
|
|
| 131.215.207.6 |
0.83ms from Los Angeles,
US
|
|
| 131.215.114.14 |
0.86ms from Los Angeles,
US
|
|
| 131.215.225.254 |
0.92ms from Los Angeles,
US
|
|
| 131.215.199.254 |
0.88ms from Los Angeles,
US
|
|
| 131.215.170.254 |
0.91ms from Los Angeles,
US
|
|
| 131.215.52.15 |
0.90ms from Los Angeles,
US
|
|
| 131.215.115.236 |
0.87ms from Los Angeles,
US
|
|
| 131.215.244.254 |
1.51ms from Los Angeles,
US
|
|
| 131.215.133.254 |
0.90ms from Los Angeles,
US
|
|
| 131.215.156.254 |
0.88ms from Los Angeles,
US
|
|
| 134.4.127.210 |
0.80ms from Los Angeles,
US
|
|
| 131.215.155.144 |
0.89ms from Los Angeles,
US
|
|
| 131.215.172.254 |
0.85ms from Los Angeles,
US
|
|
| 131.215.22.16 |
0.84ms from Los Angeles,
US
|
|
| 131.215.219.10 |
0.74ms from Los Angeles,
US
|
|
| 131.215.130.3 |
0.90ms from Los Angeles,
US
|
|
| 131.215.27.1 |
0.88ms from Los Angeles,
US
|
|
| 131.215.166.254 |
0.89ms from Los Angeles,
US
|
|
| 131.215.165.254 |
0.87ms from Los Angeles,
US
|
|
| 131.215.7.21 |
0.92ms from Los Angeles,
US
|
|
| 131.215.198.254 |
0.86ms 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 |
|---|---|---|
| 111.203.137.175 |
3.02ms from Beijing,
CN
|
|
| 105.197.84.255 |
9.46ms from Cairo,
EG
|
|
| 120.60.85.191 |
11.70ms from Chennai,
IN
|
|
| 91.248.40.207 |
4.69ms from Hamburg,
DE
|
|
| 27.126.225.63 |
1.25ms from Hong Kong,
HK
|
|
| 180.70.131.95 |
1.85ms from Incheon,
KR
|
|
| 95.144.28.159 |
9.59ms from London,
GB
|
|
| 81.132.174.239 |
2.28ms from London,
GB
|
|
| 37.22.161.31 |
8.90ms from Novosibirsk,
RU
|
|
| 141.8.110.127 |
4.74ms from Qormi,
MT
|
|
| 64.172.179.191 |
1.63ms from San Jose,
US
|
|
| 189.187.3.207 |
13.11ms from Santiago de Queretaro,
MX
|
|
| 121.100.90.255 |
2.09ms from Seoul,
KR
|
|
| 220.86.142.63 |
1.17ms from Seoul,
KR
|
|
| 99.243.1.143 |
6.52ms from Toronto,
CA
|
|
| 94.69.233.95 |
9.72ms from Athens,
GR
|
|
| 202.36.12.31 |
2.98ms from Auckland,
NZ
|
|
| 85.105.60.31 |
19.50ms from Bursa,
TR
|
|
| 97.87.228.79 |
10.40ms from Chicago,
US
|
|
| 134.161.202.79 |
8.55ms from Chicago,
US
|
|
| 3.140.91.47 |
0.17ms from Columbus,
US
|
|
| 79.202.162.223 |
9.89ms from Frankfurt am Main,
DE
|
|
| 217.84.152.223 |
7.40ms from Frankfurt am Main,
DE
|
|
| 222.218.121.255 |
13.88ms from Guiyang,
CN
|
|
| 115.144.246.31 |
0.91ms from Incheon,
KR
|
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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