Autonomous System details

AS31

California Institute of Technology  ·  caltech.edu

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

AS31 – California Institute of Technology

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
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
Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details


                                                ASHandle:       AS31
                                                OrgID:          AS31
                                                ASName:         AS31
                                                ASNumber:       AS31
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

                                            
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.

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

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity

Peers

There are 3 peers for this ASN.

Peers Name
AS13335 Cloudflare, Inc.
AS2152 CENIC
AS2153 CENIC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS13335 Cloudflare, Inc.
AS2152 CENIC
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

Downstreams

There are no downstreams for this ASN.

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

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 AS31 California Institute of Technology 1.43ms from Los Angeles, US
134.4.13.10 AS31 California Institute of Technology 1.35ms from Los Angeles, US
131.215.108.254 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.41.254 AS31 California Institute of Technology 0.87ms from Los Angeles, US
131.215.143.36 AS31 California Institute of Technology 0.85ms from Los Angeles, US
131.215.138.5 AS31 California Institute of Technology 0.86ms from Los Angeles, US
131.215.172.254 AS31 California Institute of Technology 0.87ms from Los Angeles, US
131.215.44.13 AS31 California Institute of Technology 0.85ms from Los Angeles, US
131.215.40.71 AS31 California Institute of Technology 0.89ms from Los Angeles, US
131.215.157.254 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.127.254 AS31 California Institute of Technology 0.90ms from Los Angeles, US
131.215.27.17 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.243.254 AS31 California Institute of Technology 1.57ms from Los Angeles, US
131.215.67.175 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.240.254 AS31 California Institute of Technology 1.51ms from Los Angeles, US
131.215.166.254 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.12.175 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.245.254 AS31 California Institute of Technology 1.62ms from Los Angeles, US
131.215.187.254 AS31 California Institute of Technology 0.90ms from Los Angeles, US
131.215.186.254 AS31 California Institute of Technology 0.88ms from Los Angeles, US
131.215.159.254 AS31 California Institute of Technology 0.89ms from Los Angeles, US
131.215.102.45 AS31 California Institute of Technology 0.92ms from Los Angeles, US
131.215.71.5 AS31 California Institute of Technology 0.86ms from Los Angeles, US
131.215.199.254 AS31 California Institute of Technology 0.89ms from Los Angeles, US
131.215.228.7 AS31 California Institute of Technology 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 AS11426 Charter Communications Inc 11.43ms from Ashburn, US
99.43.146.223 AS7018 AT&T Enterprises, LLC 1.25ms from Ashburn, US
162.203.28.63 AS7018 AT&T Enterprises, LLC 10.88ms from Atlanta, US
220.168.87.191 AS4134 CHINANET-BACKBONE 1.88ms from Changsha, CN
64.154.22.31 AS14127 Iland Internet Solutions Corporation 1.04ms from Dallas, US
91.194.231.255 AS43397 items GmbH & Co. KG 4.26ms from Duesseldorf, DE
95.130.253.63 AS47215 dogado GmbH 1.03ms from Frankfurt am Main, DE
78.186.185.127 AS9121 Turk Telekomunikasyon Anonim Sirketi 1.42ms from Istanbul, TR
88.243.38.47 AS9121 Turk Telekomunikasyon Anonim Sirketi 3.57ms from Istanbul, TR
31.32.153.15 AS5410 Bouygues Telecom SA 3.44ms from Paris, FR
200.141.102.143 AS7738 V tal 1.25ms from Rio de Janeiro, BR
54.116.31.255 AS16509 Amazon.com, Inc. 0.35ms from Seoul, KR
203.175.63.255 AS17573 SK Broadband Co Ltd 5.28ms from Seoul, KR
52.139.255.15 AS8075 Microsoft Corporation 0.46ms from Singapore, SG
52.64.40.255 AS16509 Amazon.com, Inc. 0.11ms from Sydney, AU
173.33.35.15 AS812 Rogers Communications Canada Inc. 1.81ms from Toronto, CA
162.104.215.255 AS22561 CenturyLink Communications, LLC 19.90ms from Chicago, US
188.136.80.47 AS12355 HeLi NET Telekommunikation GmbH & Co. 2.01ms from Duesseldorf, DE
198.36.85.207 AS395228 Adient US LLC 5.12ms from Frankfurt am Main, DE
175.234.202.95 AS4766 Korea Telecom 2.02ms from Incheon, KR
58.239.149.255 AS9318 SK Broadband Co Ltd 6.93ms from Incheon, KR
37.35.231.143 AS12479 Orange Espagne SA 1.17ms from Madrid, ES
95.20.14.207 AS12479 Orange Espagne SA 1.23ms from Madrid, ES
92.169.119.111 AS3215 Orange S.A. 2.56ms from Paris, FR
84.111.231.255 AS8551 Bezeq International Ltd. 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.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs