centrum.cz website information.
centrum.cz domain name is registered by .CZ top-level domain registry. See the other sites registred in .CZ domain zone.
Following name servers are specified for centrum.cz domain:
- max.ns.cloudflare.com
- pam.ns.cloudflare.com
and probably website centrum.cz is hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN web hosting company. Check the complete list of other most popular websites hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN hosting company.
According to Alexa traffic rank the highest website centrum.cz position was 8910 (in the world). The lowest Alexa rank position was 9677. Now website centrum.cz ranked in Alexa database as number 9158 (in the world).
Website centrum.cz Desktop speed measurement score (55/100) is better than the results of 29.37% of other sites shows that the page desktop performance can be improved.
centrum.cz Mobile usability score (99/100) is better than the results of 79.46% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of centrum.cz (48/100) is better than the results of 30.32% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-06-2024 | 9,158 | -100 |
| Nov-05-2024 | 9,058 | -24 |
| Nov-04-2024 | 9,034 | 110 |
| Nov-03-2024 | 9,144 | -10 |
| Nov-02-2024 | 9,134 | -61 |
| Nov-01-2024 | 9,073 | 11 |
| Oct-31-2024 | 9,084 | -18 |
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centrum.cz Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
centrum.cz whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
% (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: Mon Aug 29 00:12:34 2022
domain: centrum.cz
registrant: CENTRUM-CZ
admin-c: CENTRUM-CZ
nsset: CENTRUM-CLOUDFLARE2
keyset: AUTO-JF4LFJI5Z0QNSBW6631A1HZ8A
registrar: REG-WEBGLOBE
registered: 12.07.1997 02:00:00
changed: 19.06.2019 14:23:15
expire: 24.10.2022
contact: CENTRUM-CZ
org: Economia, a.s.
name: Economia, a.s.
address: Pernerova 47
address: Praha 8
address: 18600
address: CZ
registrar: REG-WEDOS
created: 11.03.2013 14:31:30
changed: 03.06.2019 11:16:50
nsset: CENTRUM-CLOUDFLARE2
nserver: max.ns.cloudflare.com
nserver: pam.ns.cloudflare.com
tech-c: CENTRUM-CZ
registrar: REG-WEDOS
created: 11.06.2019 10:51:43
keyset: AUTO-JF4LFJI5Z0QNSBW6631A1HZ8A
dnskey: 257 3 13 mdsswUyr3DPW132mOi8V9xESWE8jTo0dxCjjnopKl+GqJxpVXckHAeF+KkxLbxILfDLUT0rAK9iUzy1L53eKGQ==
tech-c: CZ-NIC
registrar: REG-CZNIC
created: 19.06.2019 14:23:15
contact: CZ-NIC
org: CZ.NIC, z.s.p.o.
name: CZ.NIC, z.s.p.o.
address: Milesovska 1136/5
address: Praha 3
address: 130 00
address: CZ
registrar: REG-CZNIC
created: 17.10.2008 12:08:21
changed: 15.05.2018 21:32:00
centrum.cz server information
centrum.cz desktop page speed rank
Last tested: 2016-06-12
Desktop Speed
Bad
55/100
centrum.cz Desktop Speed Test Quick Summary
priority - 34 Leverage 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.
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priority - 30 Eliminate render-blocking JavaScript and CSS in above-the-fold content
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https://i0.cz/sashec/js/sashec.bundle.min.js?v=67857
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…1243422062657b2a85b.js
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…71b3736320015eb0700.js
https://a.centrum.cz/cent/jserver/random=73306789/…=d/template=hp/async=0
https://ads.rubiconproject.com/ad/10900.js
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_105036_15
https://optimized-by.rubiconproject.com/a/10900/26…4x768&ad_slot=26466_15
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https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_306436_15
https://optimized-by.rubiconproject.com/a/10900/26…0x600%20and%20300x600)
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https://ads.rubiconproject.com/ad/10900.js
https://gum.criteo.com/sync?c=2&r=2&j=rp_onUserIdLoaded_145478_55
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https://i0.cz/bbx/homepage/js//functions-desktop.js?v=c99435
https://i0.cz/search-shared/js/kibitz_shared.merge.js?667_5a05ce
https://www.googleadservices.com/pagead/conversion.js
Optimize CSS Delivery of the following:
https://i0.cz/bbx/hp_cz_centrum/css/desktop/style.css?v=d69dcd
https://fonts.googleapis.com/css?family=Roboto:400…subset=latin,latin-ext
https://fonts.googleapis.com/css?family=Roboto:400…subset=latin,latin-ext
priority - 14 Avoid landing page redirects
Your page has 3 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://centrum.cz/
https://centrum.cz/
http://www.centrum.cz/
https://www.centrum.cz/
https://centrum.cz/
http://www.centrum.cz/
https://www.centrum.cz/
priority - 5 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 47.2KiB (44% reduction).
Losslessly compressing https://i0.cz/bbx/homepage/img/desktop/pocasi-sprite.png could save 20.8KiB (56% reduction).
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priority - 4 Enable 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 35.2KiB (80% reduction).
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priority - 2 Prioritize visible content
Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.
Only about 31% of the final above-the-fold content could be rendered with the full HTML response.
priority - 0 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 1.8KiB (19% reduction).
Minifying https://i0.cz/search-shared/js/kibitz_shared.merge.js?667_5a05ce could save 1.2KiB (26% reduction) after compression.
Minifying https://spir.hit.gemius.pl/xgemius.js could save 637B (13% reduction) after compression.
Minifying https://spir.hit.gemius.pl/xgemius.js could save 637B (13% reduction) after compression.
centrum.cz Desktop Resources
| Total Resources | 146 |
| Number of Hosts | 27 |
| Static Resources | 105 |
| JavaScript Resources | 29 |
| CSS Resources | 2 |
centrum.cz Desktop Resource Breakdown
centrum.cz mobile page speed rank
Last tested: 2019-12-02
Mobile Speed
Bad
48/100
centrum.cz Mobile Speed Test Quick Summary
priority - 56 Eliminate 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.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://hpxs.xsd.cz/1.65.2/js/centrum/head.js
https://hpxs.xsd.cz/1.65.2/js/init.js
https://hpxs.xsd.cz/1.65.2/js/centrum.min.js
https://hpxs.xsd.cz/1.65.2/js/init.js
https://hpxs.xsd.cz/1.65.2/js/centrum.min.js
Optimize CSS Delivery of the following:
https://fonts.googleapis.com/css?family=Roboto:400,700,900&subset=latin-ext
https://hpxs.xsd.cz/1.65.2/css/bootstrap.min.css
https://hpxs.xsd.cz/1.65.2/css/bootstrap.min.css
priority - 32 Leverage 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:
https://cdn2.caroda.io/videoPlayer/v/6b31d7998ecf5…0fa8/s/1/static.min.js (expiration not specified)
https://hpxs.xsd.cz/emg/11d659ea.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/131445e1.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/17a99cdb.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/192eedb9.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/2453969e.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/354887ef.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/35619971.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/42902f19.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/43dec887.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/43facda2.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/4a752887.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/4aea3bf1.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/4bb74725.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/599907c.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/5ff9d379.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/667bd55f.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/69b10473.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/6a22c44d.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/6b473cab.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/6ef98b7e.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/771d6b0c.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/ecd1728.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/f37e6db.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/f736a9b.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/f8fb63f.jpg (expiration not specified)
https://pocasi-moravio.centrum.cz/public/icons/weather/day/Z.svg (expiration not specified)
https://pocasi-moravio.centrum.cz/public/share_data_storage.bundle.js (expiration not specified)
https://pocasi-moravio.centrum.cz/public/tiny_actual.bundle.js (expiration not specified)
https://pocasi-moravio.centrum.cz/public/tiny_forecast_mobile.bundle.js (expiration not specified)
https://pocasi-moravio.centrum.cz/public/user_data_storage.bundle.js (expiration not specified)
https://www.centrum.cz/data (expiration not specified)
https://pocasi-backend.centrum.cz/api/v2/widget/welcome/praha (5.2 minutes)
https://i0.cz/sashec/js/sashec.bundle.min.js?v=72929 (15 minutes)
https://publisher.caroda.io/videoPlayer/caroda.min…4a72&domain=centrum.cz (15 minutes)
https://assets.adobedtm.com/4beaca54604aa1db7a7d92…1243422062657b2a85b.js (60 minutes)
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https://assets.adobedtm.com/4beaca54604aa1db7a7d92…37664746d4401003aaf.js (60 minutes)
https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://secure-assets.rubiconproject.com/utils/xapi/multi-sync.js (3.6 hours)
https://a.cele.cz/afj/xgemius.js?ads=1 (4 hours)
https://a.cele.cz/b2Fhd3o6Ly9oLmpsc2wuamcvaG1xL2Fs…3doUmVHd2hSZUd3aDc%3D/ (4 hours)
https://hpxs.xsd.cz/emg/11d659ea.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/131445e1.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/17a99cdb.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/192eedb9.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/2453969e.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/354887ef.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/35619971.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/42902f19.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/43dec887.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/43facda2.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/4a752887.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/4aea3bf1.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/4bb74725.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/599907c.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/5ff9d379.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/667bd55f.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/69b10473.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/6a22c44d.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/6b473cab.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/6ef98b7e.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/771d6b0c.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/ecd1728.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/f37e6db.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/f736a9b.jpg (expiration not specified)
https://hpxs.xsd.cz/emg/f8fb63f.jpg (expiration not specified)
https://pocasi-moravio.centrum.cz/public/icons/weather/day/Z.svg (expiration not specified)
https://pocasi-moravio.centrum.cz/public/share_data_storage.bundle.js (expiration not specified)
https://pocasi-moravio.centrum.cz/public/tiny_actual.bundle.js (expiration not specified)
https://pocasi-moravio.centrum.cz/public/tiny_forecast_mobile.bundle.js (expiration not specified)
https://pocasi-moravio.centrum.cz/public/user_data_storage.bundle.js (expiration not specified)
https://www.centrum.cz/data (expiration not specified)
https://pocasi-backend.centrum.cz/api/v2/widget/welcome/praha (5.2 minutes)
https://i0.cz/sashec/js/sashec.bundle.min.js?v=72929 (15 minutes)
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https://assets.adobedtm.com/4beaca54604aa1db7a7d92…36364746d6104001324.js (60 minutes)
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https://www.google-analytics.com/plugins/ua/ec.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://secure-assets.rubiconproject.com/utils/xapi/multi-sync.js (3.6 hours)
https://a.cele.cz/afj/xgemius.js?ads=1 (4 hours)
https://a.cele.cz/b2Fhd3o6Ly9oLmpsc2wuamcvaG1xL2Fs…3doUmVHd2hSZUd3aDc%3D/ (4 hours)
priority - 19 Optimize images
Properly formatting and compressing images can save many bytes of data.
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priority - 12 Enable compression
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priority - 0 Minify JavaScript
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priority - 0 Minify HTML
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centrum.cz Mobile Resources
| Total Resources | 231 |
| Number of Hosts | 53 |
| Static Resources | 136 |
| JavaScript Resources | 45 |
| CSS Resources | 3 |
centrum.cz Mobile Resource Breakdown
centrum.cz mobile page usability
Last tested: 2019-12-02
Mobile Usability
Good
99/100
centrum.cz Mobile Usability Test Quick Summary
priority - 0 Size 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
The tap target
<label for="currency-EUR" class="sc-1tefn21-0 VRPLI">EUR</label> and 2 others are close to other tap targets.The tap target
<label for="currency-EUR" class="sc-1tefn21-0 VRPLI">EUR</label> and 2 others are close to other tap targets.centrum.cz similar domains
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centrum.cz Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
centrum.cz TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.