sel4.systems Website Information
Daily Unique Visits: 4,204
Daily Page Views: 16,816
Income Per Day: $47
Estimated Value: $25,380
sel4.systems is registered under .SYSTEMS top-level domain. Please check other sites in .SYSTEMS zone.
No name server records were found.
and is probably hosted by FASTLY - Fastly, US. See the full list of other websites hosted by FASTLY - Fastly, US.
The highest website sel4.systems position in Alexa rank database was 58031 and the lowest rank position was 981009. Current position of sel4.systems in Alexa rank database is 298495.
Desktop speed score of sel4.systems (91/100) shows that the page is performing great on desktop computers.
Mobile usability score of sel4.systems (99/100) means that the page is mobile-friendly.
Mobile speed score of sel4.systems (81/100) shows that the landing page performance on mobile devices is excellent.
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sel4.systems Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
sel4.systems whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Registry Domain ID: 1929fc81be2f4d76a6a29f3cc8d42132-DONUTS
Registrar WHOIS Server: whois.1api.net
Registrar URL: http://www.1api.net
Updated Date: 2023-03-22T17:07:15Z
Creation Date: 2014-03-19T16:00:46Z
Registry Expiry Date: 2024-03-19T16:00:46Z
Registrar: 1API GmbH
Registrar IANA ID: 1387
Registrar Abuse Contact Email: abuse@1api.net
Registrar Abuse Contact Phone: +49.68949396850
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: The Linux Foundation
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: CA
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
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Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
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Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
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Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: dns1.zoneedit.com
Name Server: dns2.zoneedit.com
Name Server: dns3.zoneedit.com
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2023-10-25T01:12:18Z
sel4.systems server information
Servers Location
sel4.systems desktop page speed rank
Last tested: 2017-03-12
sel4.systems Desktop Speed Test Quick Summary
priority - 4Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
http://sel4.systems/css/sel4.css
priority - 3Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://sel4.systems/css/sel4.css (expiration not specified)
http://sel4.systems/images/logo-text-white.svg (expiration not specified)
http://sel4.systems/js/bootstrap.min.js (expiration not specified)
http://sel4.systems/js/jquery.min.js (expiration not specified)
http://www.google-analytics.com/ga.js (2 hours)
priority - 1Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 11.9KiB (68% reduction).
sel4.systems Desktop Resource Breakdown
| Total Resources | 8 |
| Number of Hosts | 2 |
| Static Resources | 6 |
| JavaScript Resources | 3 |
| CSS Resources | 2 |
sel4.systems mobile page speed rank
Last tested: 2017-03-12
sel4.systems Mobile Speed Test Quick Summary
priority - 16Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 2 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
http://sel4.systems/css/sel4.css
priority - 4Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://sel4.systems/css/sel4.css (expiration not specified)
http://sel4.systems/images/logo-text-white.svg (expiration not specified)
http://sel4.systems/js/bootstrap.min.js (expiration not specified)
http://sel4.systems/js/jquery.min.js (expiration not specified)
http://www.google-analytics.com/ga.js (2 hours)
priority - 1Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 11.9KiB (68% reduction).
sel4.systems Mobile Resource Breakdown
| Total Resources | 9 |
| Number of Hosts | 2 |
| Static Resources | 6 |
| JavaScript Resources | 3 |
| CSS Resources | 2 |
sel4.systems mobile page usability
Last tested: 2017-03-12
sel4.systems Mobile Usability Test Quick Summary
priority - 0Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
<a href="http://ts.data…/projects/seL4">Data61 seL4 project site</a> and 3 others are close to other tap targets.sel4.systems HTML validation
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sel4.systems Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
sel4.systems TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.