Here is an overview of what we consider to be the key website statistics and information:
| Parameter name | Status | Comment |
|---|---|---|
| Website meta title | Home | seL4 | Search engines recommend title length of around 50-60 characters. The length of this title is 11. |
| Meta description | A description has not been provided for this site. | To make sure all the meta description is visible in search results page, Google recommends length of up to 320 characters at the most. This description has exactly 50 characters. |
| Load time | 0.9528 seconds on average | Website load speed is pretty fast. |
| Alexa global | 306 742, as last updated | According to Alexa, the website's popularity is not exactly high. Take this rank with a healthy pinch of salt. |
| Total links on homepage | We found 43 links | This is a normal amount of links. |
| Number of backlinks | Around 48 | Backlinks is one of the key metrics for search engines. This website seems to have a very low number of backlinks, which means poorer rank in search results. |
| Page HTML size | 7.4KB | Load speed (and overall responsiveness) is such an important factor for both search engines and user experience, would you not agree? With that in mind, this is a very good result. |
| Website server | Server appears to be online. The IP address for the server is 221.199.209.21. | It's unfortunate, but despite our best attempts, we failed to gather enough data to provide a meaningful insight at this time. |
What, all that information was not enough? You want... more? Right, then. You asked for it.
As we've mentioned before, traffic is not a key metric. However, the target audience does say a lot about what's been done to optimize the website, as well as what should be done going forwards. Let's see if we have any useful information here.
| Parameter name | Status | Comment |
|---|---|---|
| Related websites | l4hq.org microkernel.info microkerneldude.wordpress.com genode.org data61.csiro.au |
These are the websites that fall into the same category as sel4.systems, and so target the same audience and, likely, keywords. To a larger or smaller extent, all of them are competitors. |
Absolute accuracy is accessible only by the webmasters. If you keep that in mind, perhaps you will find out approximate numbers of some use.
Where appropriate, we'll add an insight, but the numbers themselves speak clearly enough, eh?
| Parameter name | Status | Comment |
|---|---|---|
| Time spent on site | 2:28 | This is a decent average time spent on a website. |
With over 4 million websites indexed (which can seem as a lot, or very little, depending on your point of view), Alexa is perhaps the oldest and certainly the best known ranking system, deservedly or not. The Alexa Global and Local ranks of a website are based on an approximate amount of visitors a given website receives. The more visitors, the higher the rank. The Alexa rank, be it Local or Global, should be taken with a pinch of salt. After all, visitor count is by far not the simple measure of a website's success it's made out to be. For example, a gardening website is never going to be as popular as a movie review website. It does not mean it's not popular within it's niche.
Similarly to how a hard drive or a modern SSD device holds your files, a server holds all the files the website needs to operate. To load a webpage, your browser needs to contact the said server and request files - strings of code that make up the website into what it is, including images, text and database entries. Each physical server has a unique IP address that is used by the browser to contact it.
Let's see what technical information we've managed to gather:
| Header in detail |
|---|
HTTP/1.1 200 OK Server: nginx/1.2.1 Date: Fri, 30 Jun 2017 04:24:35 GMT Content-Type: text/html; charset=UTF-8 Transfer-Encoding: chunked Connection: keep-alive Vary: Accept-Encoding |
| WHOIS information |
|---|
Domain Name: sel4.systems Registry Domain ID: 1929fc81be2f4d76a6a29f3cc8d42132-DONUTS Registrar WHOIS Server: www.gandi.net/whois Registrar URL: https://www.gandi.net Updated Date: 2017-04-02T23:42:07Z Creation Date: 2014-03-19T16:00:46Z Registry Expiry Date: 2018-03-19T16:00:46Z Registrar: Gandi SAS Registrar IANA ID: 81 Registrar Abuse Contact Email: Registrar Abuse Contact Phone: +33.170377661 Domain Status: ok https://icann.org/epp#ok Registry Registrant ID: 832d347111a743e984a80f91c3032504-DONUTS Registrant Name: Gernot Heiser Registrant Organization: School of Computer Science & Engineering Registrant Street: Level 3, K17 Building Registrant City: UNSW Sydney Registrant State/Province: NSW Registrant Postal Code: 2052 Registrant Country: AU Registrant Phone: +61.294905850 Registrant Phone Ext: Registrant Fax: Registrant Fax Ext: Registrant Email: Registry Admin ID: bc7a42ad5437494890b96761c0c29600-DONUTS Admin Name: PETER CHUBB Admin Organization: Data61, CSIRO Admin Street: Obfuscated whois Gandi-63-65 boulevard Massena Admin City: Obfuscated whois Gandi-Paris Admin State/Province: Paris Admin Postal Code: 75013 Admin Country: FR Admin Phone: +33.170377666 Admin Phone Ext: Admin Fax: +33.143730576 Admin Fax Ext: Admin Email: Registry Tech ID: 832d347111a743e984a80f91c3032504-DONUTS Tech Name: Gernot Heiser Tech Organization: School of Computer Science & Engineering Tech Street: Level 3, K17 Building Tech City: UNSW Sydney Tech State/Province: NSW Tech Postal Code: 2052 Tech Country: AU Tech Phone: +61.294905850 Tech Phone Ext: Tech Fax: Tech Fax Ext: Tech Email: Name Server: b.dns.gandi.net Name Server: a.dns.gandi.net Name Server: c.dns.gandi.net DNSSEC: unsigned URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of WHOIS database: 2017-05-23T01:56:00Z <<< For more information on Whois status codes, please visit https://icann.org/epp Terms of Use: Users accessing the Donuts WHOIS service must agree to use the data only for lawful purposes, and under under no circumstances use the data to: Allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the registrar's own existing customers. Enable high volume, automated, electronic processes that send queries or data to the systems of Donuts or any ICANN-accredited registrar, except as reasonably necessary to register domain names or modify existing registrations. When using the Donuts Whois service, please consider the following: The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritative for registered domain objects. The Whois service may be scheduled for downtime during production or OT&E maintenance periods. Queries to the Whois services are throttled. If too many queries are received from a single IP address within a specified time, the service will begin to reject further queries for a period of time to prevent disruption of Whois service access. |
A good domain address is usually one that is easy to spell, resulting in the smallest amount of mistypes possible. Still, such a thing inevitably happens. Here is a list with the most frequent 1700 mistypes, associated with sel4.systems:
If you are curious about what TLD extensions could also match the domain name of sel4.systems well, we have prepared an extensive list for you to look through:
We are glad you have finished this report. Hopefully, you found what you were looking for. In case you need more information to compare, here is a list of some other detailed overviews we have prepared: