vzlu.cz Website Information
Daily Unique Visits: 915
Daily Page Views: 1,830
Income Per Day: $6
Estimated Value: $1,440
vzlu.cz is registered under .CZ top-level domain. Please check other sites in .CZ zone.
No name server records were found.
and is probably hosted by INTERNET CZ, a.s.. See the full list of other websites hosted by INTERNET CZ, a.s..
The highest website vzlu.cz position in Alexa rank database was 18143 and the lowest rank position was 999525. Current position of vzlu.cz in Alexa rank database is 783938.
Desktop speed score of vzlu.cz (45/100) is better than the results of 19.01% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of vzlu.cz (96/100) is better than the results of 46.59% of other sites and means that the page is mobile-friendly.
Mobile speed score of vzlu.cz (49/100) is better than the results of 31.99% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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vzlu.cz 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.
vzlu.cz 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.
% (c) 2006-2021 CZ.NIC, z.s.p.o.
%
% Intended use of supplied data and information
%
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
%
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
%
% See also a search service at http://www.nic.cz/whois/
%
%
% Whoisd Server Version: 3.12.2
% Timestamp: Sun Jul 31 07:59:21 2022
domain: vzlu.cz
registrant: SB:VZLU-CZ
admin-c: A24CONTACT-15160110430
nsset: NSS:GLOBE-SGLO000001:1
keyset: A24-KEYSET
registrar: REG-ACTIVE24
registered: 10.12.1999 18:41:00
changed: 09.06.2015 11:44:26
expire: 10.12.2022
contact: SB:VZLU-CZ
org: Vyzkumny a zkusebni letecky ustav, a. s.
name: Vyzkumny a zkusebni letecky ustav, a. s.
address: Beranovych 130
address: Praha 9 - Letnany
address: 199 05
address: CZ
registrar: REG-ACTIVE24
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00
contact: A24CONTACT-15160110430
org: Výzkumný a zkušební letecký ústav, a.s.
name: Zdeněk Kočí
address: Beranových 130
address: Praha - Letňany
address: 199 05
address: CZ
registrar: REG-ACTIVE24
created: 09.06.2015 11:05:00
nsset: NSS:GLOBE-SGLO000001:1
nserver: alfa.ns.active24.cz (81.95.96.2, 2a02:4a8:ac24:100::96:2)
nserver: beta.ns.active24.cz (81.0.238.27, 2001:1528:151::12)
nserver: gama.ns.active24.sk
tech-c: ACTIVE24
registrar: REG-ACTIVE24
created: 01.10.2007 02:00:00
changed: 28.10.2021 22:12:07
contact: ACTIVE24
org: ACTIVE 24, s.r.o.
name: ACTIVE 24, s.r.o.
address: Sokolovská 394/17
address: Praha 8
address: 186 00
address: CZ
registrar: REG-ACTIVE24
created: 29.04.2008 12:35:02
changed: 15.05.2018 21:32:00
keyset: A24-KEYSET
dnskey: 257 3 13 0EK9ChwJW+CVCvP7mizQwEnR2OJpHgbLmilGV5OyqncZoOufo9fIbVrvxT6qid/T9sAWH7KOfzItPxkVOIbRjg==
tech-c: ACTIVE24
registrar: REG-ACTIVE24
created: 26.11.2008 14:12:02
changed: 10.09.2019 15:48:38
%
% Intended use of supplied data and information
%
% Data contained in the domain name register, as well as information
% supplied through public information services of CZ.NIC association,
% are appointed only for purposes connected with Internet network
% administration and operation, or for the purpose of legal or other
% similar proceedings, in process as regards a matter connected
% particularly with holding and using a concrete domain name.
%
% Full text available at:
% http://www.nic.cz/page/306/intended-use-of-supplied-data-and-information/
%
% See also a search service at http://www.nic.cz/whois/
%
%
% Whoisd Server Version: 3.12.2
% Timestamp: Sun Jul 31 07:59:21 2022
domain: vzlu.cz
registrant: SB:VZLU-CZ
admin-c: A24CONTACT-15160110430
nsset: NSS:GLOBE-SGLO000001:1
keyset: A24-KEYSET
registrar: REG-ACTIVE24
registered: 10.12.1999 18:41:00
changed: 09.06.2015 11:44:26
expire: 10.12.2022
contact: SB:VZLU-CZ
org: Vyzkumny a zkusebni letecky ustav, a. s.
name: Vyzkumny a zkusebni letecky ustav, a. s.
address: Beranovych 130
address: Praha 9 - Letnany
address: 199 05
address: CZ
registrar: REG-ACTIVE24
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00
contact: A24CONTACT-15160110430
org: Výzkumný a zkušební letecký ústav, a.s.
name: Zdeněk Kočí
address: Beranových 130
address: Praha - Letňany
address: 199 05
address: CZ
registrar: REG-ACTIVE24
created: 09.06.2015 11:05:00
nsset: NSS:GLOBE-SGLO000001:1
nserver: alfa.ns.active24.cz (81.95.96.2, 2a02:4a8:ac24:100::96:2)
nserver: beta.ns.active24.cz (81.0.238.27, 2001:1528:151::12)
nserver: gama.ns.active24.sk
tech-c: ACTIVE24
registrar: REG-ACTIVE24
created: 01.10.2007 02:00:00
changed: 28.10.2021 22:12:07
contact: ACTIVE24
org: ACTIVE 24, s.r.o.
name: ACTIVE 24, s.r.o.
address: Sokolovská 394/17
address: Praha 8
address: 186 00
address: CZ
registrar: REG-ACTIVE24
created: 29.04.2008 12:35:02
changed: 15.05.2018 21:32:00
keyset: A24-KEYSET
dnskey: 257 3 13 0EK9ChwJW+CVCvP7mizQwEnR2OJpHgbLmilGV5OyqncZoOufo9fIbVrvxT6qid/T9sAWH7KOfzItPxkVOIbRjg==
tech-c: ACTIVE24
registrar: REG-ACTIVE24
created: 26.11.2008 14:12:02
changed: 10.09.2019 15:48:38
vzlu.cz server information
Servers Location
vzlu.cz desktop page speed rank
Last tested: 2017-05-17
Desktop Speed
Bad
45/100
vzlu.cz Desktop Speed Test Quick Summary
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priority - 12Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
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http://www.vzlu.cz/css/wd.min.css?v=160822-1
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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://s7.addthis.com/l10n/client.cs.min.json (expiration not specified)
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priority - 3Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
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http://www.vzlu.cz/
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priority - 0Minify JavaScript
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priority - 0Minify CSS
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Minify CSS for the following resources to reduce their size by 1.5KiB (59% reduction).
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priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 720B (11% reduction).
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vzlu.cz Desktop Resource Breakdown
| Total Resources | 106 |
| Number of Hosts | 22 |
| Static Resources | 78 |
| JavaScript Resources | 32 |
| CSS Resources | 5 |
vzlu.cz mobile page speed rank
Last tested: 2017-05-16
Mobile Speed
Bad
49/100
vzlu.cz Mobile Speed Test Quick Summary
priority - 51Optimize images
Properly formatting and compressing images can save many bytes of data.
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priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
http://www.vzlu.cz/js/vendor/modernizr-2.6.2.min.js
https://www.google.com/recaptcha/api.js?hl=cs
http://s7.addthis.com/js/300/addthis_widget.js
https://www.google.com/recaptcha/api.js?hl=cs
http://s7.addthis.com/js/300/addthis_widget.js
Optimize CSS Delivery of the following:
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http://www.vzlu.cz/css/wd.min.css?v=160822-1
http://www.vzlu.cz/css/wd.min.css?v=160822-1
priority - 10Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://vzlu.cz/
http://www.vzlu.cz/
http://www.vzlu.cz/cs/
http://www.vzlu.cz/
http://www.vzlu.cz/cs/
priority - 7Leverage 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://s7.addthis.com/l10n/client.cs.min.json (expiration not specified)
http://m.addthisedge.com/live/boost/xa-53733ff06e5…_ate.track.config_resp (60 seconds)
https://www.google.com/recaptcha/api.js?hl=cs (5 minutes)
http://s7.addthis.com/js/300/addthis_widget.js (10 minutes)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
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http://m.addthisedge.com/live/boost/xa-53733ff06e5…_ate.track.config_resp (60 seconds)
https://www.google.com/recaptcha/api.js?hl=cs (5 minutes)
http://s7.addthis.com/js/300/addthis_widget.js (10 minutes)
https://static.doubleclick.net/instream/ad_status.js (15 minutes)
http://connect.facebook.net/en_US/sdk.js (20 minutes)
http://maps.googleapis.com/maps/api/js?sensor=false (30 minutes)
https://apis.google.com/js/platform.js (30 minutes)
http://www.google-analytics.com/analytics.js (2 hours)
priority - 0Minify JavaScript
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Minify JavaScript for the following resources to reduce their size by 3.4KiB (36% reduction).
Minifying http://www.vzlu.cz/js/plugins.js?v=160822-1 could save 3.4KiB (36% reduction) after compression.
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 1.5KiB (59% reduction).
Minifying http://www.vzlu.cz/css/normalize.css could save 1.5KiB (59% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 716B (11% reduction).
Minifying http://www.vzlu.cz/cs/ could save 716B (11% reduction) after compression.
vzlu.cz Mobile Resource Breakdown
| Total Resources | 97 |
| Number of Hosts | 23 |
| Static Resources | 68 |
| JavaScript Resources | 31 |
| CSS Resources | 5 |
vzlu.cz mobile page usability
Last tested: 2017-05-16
Mobile Usability
Good
96/100
vzlu.cz Mobile Usability Test Quick Summary
priority - 3Size 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.
The tap target
<a href="http://www.vzl…cnost-se6.html" class="wd-c-4">Obrana a bezpe…nstrukcí apod.</a> is close to 2 other tap targets.The tap target
<a href="https://www.go…icies/privacy/">Ochrana soukromí</a> and 1 others are close to other tap targets.The tap target
<div>Use two finger…iteLabels100 m</div> is close to 1 other tap targets.The tap target
<div>Use two finger…iteLabels100 m</div> and 12 others are close to other tap targets.The tap target
<div>Use two finger…o move the map</div> is close to 1 other tap targets.The tap target
<a href="https://maps.g…apclient=apiv3"></a> is close to 4 other tap targets.The tap target
<a href="https://www.go…erms_maps.html">Terms of Use</a> is close to 4 other tap targets.The tap target
<div></div> and 1 others are close to other tap targets.The tap target
<div id="at4m-mobile-container" class="at4m-dock-bott…nimated fadeIn">SdíletToggle D…ddThisSoukromí</div> is close to 2 other tap targets.The tap target
<div id="at4m-mobile-container" class="at4m-dock-bott…nimated fadeIn">SdíletToggle D…ddThisSoukromí</div> and 1 others are close to other tap targets.The tap target
<a id="at4m-sb" href="#">Sdílet</a> is close to 3 other tap targets.The tap target
<a id="at4m-dock-toggle" href="#">Toggle Dock</a> is close to 2 other tap targets.vzlu.cz HTML validation
Errors
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Line: 10 Column: 3 - 69
"...utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> ..."
"...utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> ..."
Bad value “” for attribute “name” on element “input”: Must not be empty.
Line: 130 Column: 39 - 105
"... <input type="reset" name="" value="Zrušit" class="wd-btn big vzlu"> ..." Line: 414 Column: 5 - 72
"...c-6"> <input type="reset" name="" value="Vymazat" class="wd-btn big vzlu"> </..."
"... <input type="reset" name="" value="Zrušit" class="wd-btn big vzlu"> ..." Line: 414 Column: 5 - 72
"...c-6"> <input type="reset" name="" value="Vymazat" class="wd-btn big vzlu"> </..."
Duplicate ID “menu-trigger”.
Line: 145 Column: 34 - 55
"...ul><!----><li id="menu-trigger"><a hre..."
"...ul><!----><li id="menu-trigger"><a hre..."
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Line: 379 Column: 49 - 162
"... <iframe width="100%" height="300" src="https://www.youtube.com/embed/Mm5xcHdBQQw" frameborder="0" allowfullscreen></ifra..."
"... <iframe width="100%" height="300" src="https://www.youtube.com/embed/Mm5xcHdBQQw" frameborder="0" allowfullscreen></ifra..."
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Line: 379 Column: 49 - 162
"... <iframe width="100%" height="300" src="https://www.youtube.com/embed/Mm5xcHdBQQw" frameborder="0" allowfullscreen></ifra..."
"... <iframe width="100%" height="300" src="https://www.youtube.com/embed/Mm5xcHdBQQw" frameborder="0" allowfullscreen></ifra..."
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Line: 472 Column: 80 - 88
"...ang: 'cs'}</script> <di..."
"...ang: 'cs'}</script> <di..."
Warnings
The first occurrence of ID “menu-trigger” was here.
Line: 144 Column: 23 - 52
"... <a href="#" id="menu-trigger"><i cla..."
"... <a href="#" id="menu-trigger"><i cla..."
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vzlu.cz 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.
vzlu.cz 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.