CRA.CZ Datové centrum, přenos dat, cloud | cra.cz

cra.cz Website Information

Daily Unique Visits: 2,603

Daily Page Views: 7,809

Income Per Day: $23

Estimated Value: $8,280

cra.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 RADIOKOMUNIKACE a.s.. See the full list of other websites hosted by RADIOKOMUNIKACE a.s..

The highest website cra.cz position in Alexa rank database was 30006 and the lowest rank position was 996959. Current position of cra.cz in Alexa rank database is 413310.

Desktop speed score of cra.cz (49/100) is better than the results of 22.8% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of cra.cz (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.

Mobile speed score of cra.cz (45/100) is better than the results of 25.64% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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cra.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.


cra.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: Tue Aug 29 00:55:26 2023

domain: cra.cz
registrant: SB:PP405-RIPE_XX
admin-c: SMER
admin-c: KMARTY
nsset: NSS-RADIKOMUNIKACE-15
keyset: KSET-CRA-20
registrar: REG-INTERNET-CZ
registered: 07.06.1997 02:00:00
changed: 01.04.2022 11:18:06
expire: 13.10.2023

contact: SB:PP405-RIPE_XX
org: České Radiokomunikace a.s.
name: České Radiokomunikace a.s.
address: Skokanská 1
address: Praha 6
address: 16900
address: CZ
registrar: REG-INTERNET-CZ
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00

contact: SMER
name: Radovan Smetanka
address: Skokanska 1
address: Praha 6
address: 16900
address: CZ
registrar: REG-INTERNET-CZ
created: 23.11.2005 15:45:00
changed: 15.05.2018 21:32:00

contact: KMARTY
name: Martin Kebert
registrar: REG-MOJEID
created: 29.10.2010 18:50:42
changed: 12.11.2020 17:15:21

nsset: NSS-RADIKOMUNIKACE-15
nserver: ns1.bluetone.cz (212.158.128.13, 2a02:a40:2::13)
nserver: ns2.bluetone.cz (85.207.207.75, 2a02:a40:2:200::2:200)
nserver: ns.bluetone.cz (212.158.128.12, 2a02:a40:2::12)
tech-c: SMER
tech-c: KMARTY
registrar: REG-INTERNET-CZ
created: 06.03.2015 10:57:42
changed: 19.01.2018 12:42:47

keyset: KSET-CRA-20
dnskey: 257 3 13 /1N0S0/hrUcWCxa3XB9fCNw8CoYW8TZxumI5jKeGDcEHo/b0GD+lMXdYuBMcvx8qF70Ut/30P2v3mRUai3BD/A==
tech-c: SB:RADIOKOM_05
tech-c: KMARTY
registrar: REG-INTERNET-CZ
created: 03.12.2019 10:54:48

contact: SB:RADIOKOM_05
org: České Radiokomunikace a.s.
name: České Radiokomunikace a.s.
address: Skokanská 2117/1
address: Praha 6 - Břevnov
address: 169 00
address: CZ
registrar: REG-ZONER
created: 24.11.2005 16:15:00
changed: 06.03.2019 15:42:05

cra.cz server information

Servers Location

cra.cz desktop page speed rank

Last tested: 2017-05-21


Desktop Speed Bad
49/100

cra.cz Desktop Speed Test Quick Summary


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priority - 32Leverage browser caching

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priority - 5Reduce server response time

priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

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cra.cz Desktop Resource Breakdown

Total Resources87
Number of Hosts16
Static Resources67
JavaScript Resources33
CSS Resources11

cra.cz mobile page speed rank

Last tested: 2017-05-21


Mobile Speed Bad
45/100

cra.cz Mobile Speed Test Quick Summary


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priority - 45Leverage browser caching

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priority - 15Minify JavaScript

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Minifying https://www.cra.cz/js/jquery.spritely-0.6.js could save 13KiB (55% reduction).
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Minifying https://www.cra.cz/js/jquery.cookie.js could save 1.3KiB (43% reduction).
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priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://www.cra.cz/css/wysiwyg.css

priority - 7Reduce server response time

priority - 6Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 58.1KiB (27% reduction).

Compressing https://www.cra.cz/images/hp/hp04.jpg could save 22.7KiB (52% reduction).
Compressing https://www.cra.cz/foto/clanky/cra_ict_2.jpg could save 12.5KiB (28% reduction).
Compressing https://www.cra.cz/images/hp/par-default.jpg could save 9.6KiB (15% reduction).
Compressing https://www.cra.cz/foto/clanky/ico_media_xxl.png could save 3.1KiB (22% reduction).
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Compressing https://www.cra.cz/images/hp/hp02.jpg could save 1.8KiB (15% reduction).
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Compressing https://www.cra.cz/images/hr-line-orange.png could save 948B (92% reduction).
Compressing https://www.cra.cz/images/close-button.png could save 684B (50% reduction).

priority - 1Minify 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 7.4KiB (24% reduction).

Minifying https://www.cra.cz/css/theme-custom.css could save 4.4KiB (22% reduction) after compression.
Minifying https://www.cra.cz/css/ui-lightness/jquery-ui-1.8.17.custom.css could save 1.6KiB (27% reduction) after compression.
Minifying https://www.cra.cz/css/slider.css could save 821B (97% reduction) after compression.
Minifying https://www.cra.cz/css/select2.css could save 556B (17% 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 1.2KiB (15% reduction).

Minifying https://www.cra.cz/ could save 1.2KiB (15% reduction) after compression.

cra.cz Mobile Resource Breakdown

Total Resources83
Number of Hosts16
Static Resources63
JavaScript Resources33
CSS Resources11

cra.cz mobile page usability

Last tested: 2017-05-21


Mobile Usability Good
99/100

cra.cz 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.

The tap target <a href="/cra-backup" class="button button-orange">Bližší informace</a> and 2 others are close to other tap targets.

The tap target <a href="http://dvbt2overeno.cz/" class="button button-orange">Ověřte zde</a> is close to 1 other tap targets.

The tap target <a href="#" class="close-stripe b…button-orange">Rozumím</a> is close to 1 other tap targets.

cra.cz HTML validation

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Line: 4 Column: 5 - 110
"...head> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"> <..."

Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.

Line: 1141 Column: 9 - 37
"...> <section id="lista" class=""> ..." Line: 1212 Column: 2 - 23
"... </div> <section id="sitemap"> <..."

Errors

Duplicate attribute “class”.

Line: 434 Column: - 80
"... href="#" class="dropdown-togg..."

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cra.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.


cra.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.