ALZA.CZ Alza.cz - největší obchod s počítači a elektronikou | Alza.cz


alza.cz website information.

alza.cz website servers are located in Unknown Zone and are responding from following IP address 185.181.176.19. Check the full list of most visited websites located in Unknown Zone.

alza.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 alza.cz domain:

  • beta.ns.active24.cz
  • gama.ns.active24.sk
  • alfa.ns.active24.cz

and probably website alza.cz is hosted by active24.cz web hosting company. Check the complete list of other most popular websites hosted by active24.cz hosting company.

According to Alexa traffic rank the highest website alza.cz position was 1782 (in the world). The lowest Alexa rank position was 23188. Now website alza.cz ranked in Alexa database as number 3051 (in the world).

Website alza.cz Desktop speed measurement score (80/100) is better than the results of 73.16% of other sites and shows that the page is performing great on desktop computers.

alza.cz Mobile usability score (99/100) is better than the results of 87.11% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of alza.cz (46/100) is better than the results of 24.03% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Oct-21-2019 3,051809
Oct-20-2019 3,860-938
Oct-19-2019 2,922157
Oct-18-2019 3,0795,342
Oct-17-2019 8,421-5,057
Oct-16-2019 3,364-186
Oct-15-2019 3,178604

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alza.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.


alza.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) 2006-2017 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: 3.10.2
% Timestamp: Fri Apr 28 09:25:26 2017

domain: alza.cz
registrant: SDAX2ZD8A
admin-c: SDAX2ZD8A
nsset: NSS:GLOBE-SGLO000001:1
keyset: A24-KEYSET
registrar: REG-ACTIVE24
registered: 08.03.2004 20:20:00
changed: 02.10.2012 15:52:13
expire: 08.03.2025

contact: SDAX2ZD8A
org: L.S. Investments Limited
name: Vladimira Podlesny
address: Chapo Central, 3rd Floor, 20 Spyrou Kyprianou Avenue
address: Nicosia, Republic of Cyprus
address: 1075
address: CY
registrar: REG-ACTIVE24
created: 27.04.2009 16:12:30
changed: 21.02.2017 11:44:54

nsset: NSS:GLOBE-SGLO000001:1
nserver: beta.ns.active24.cz (81.0.238.27, 2001:1528:151::12)
nserver: gama.ns.active24.sk
nserver: alfa.ns.active24.cz (81.95.96.2, 2a02:4a8:ac24:100::96:2)
tech-c: ACTIVE24
registrar: REG-ACTIVE24
created: 01.10.2007 02:00:00
changed: 19.07.2011 15:27:33

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
phone: +420.234262000
fax-no: +420.234262009
registrar: REG-ACTIVE24
created: 29.04.2008 12:35:02
changed: 28.11.2012 15:33:24

keyset: A24-KEYSET
dnskey: 257 3 5 AwEAAaZg1mHVw0d/qllyQBGqnRGJGRbL/51OuJ/QmAwt5VACOeIbRjAOfZ5RDvnjc9IekSVgXiSjDuO+gSm63bvFHTiGLKUnJD03TmB12oOctDB0pMs0eQT+2HoKdkgmqipzqYssVZOdcb/t/NP3fq3xLdYlJgTBmx1769NsyF602her5PSojVcxRjUlqqA4zNmN9K2r6+xrbhSHf0+dGC2u8O4bW1qGEoeo2M+xr7oUiUL8yH5n0DbhxcribLcuGro1LTn4s3P9xTYGSRb0Pd9rK0s7csb7FxyGdwsOqmZr47t3UQn2pp8q4guca2ef/hjevkq+wVZv/eUHhu6FzMCYTqc=
tech-c: ACTIVE24
registrar: REG-ACTIVE24
created: 26.11.2008 14:12:02
changed: 07.10.2011 21:51:15

alza.cz server information

Servers Location

alza.cz desktop page speed rank

Last tested: 2017-04-27


Desktop Speed Medium
80/100

alza.cz Desktop Speed Test Quick Summary


priority - 14 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://i.alza.cz/Scripts/loadCSSScript-2bfed1e36a…e3420945e0d9002cd8c.js
https://i.alza.cz/Scripts/critical-b05d0369e9ea900…4e6a7fef8fb4b665e47.js
https://www.alza.cz/Scripts/lang-CZ-3319388672.js

Optimize CSS Delivery of the following:

https://i.alza.cz/Styles/global-full-4dd11dc83ac0b…b09f191ce0ac3fa233.css
https://i.alza.cz/Styles/defaultPage-full-0712555c…3a5e75bbc3fba391a5.css

priority - 5 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://nexus-websocket-a.intercom.io/client-test (expiration not specified)
https://nexus-websocket-b.intercom.io/client-test (expiration not specified)
https://www.alza.cz/Services/EShopService.svc/GetDialogHtml (expiration not specified)
https://www.alza.cz/Services/EShopService.svc/GetPopUpDialog (expiration not specified)
https://www.alza.cz/Services/EShopService.svc/GetRegistrationDialog (expiration not specified)
https://www.googletagmanager.com/gtm.js?id=GTM-K8N2RL (15 minutes)
https://connect.facebook.net/cs_CZ/all.js (20 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/851404928299796?v=stable (20 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.alza.cz/Scripts/lang-CZ-3319388672.js (3.8 days)

priority - 4 Optimize images

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

Optimize the following images to reduce their size by 42.1KiB (32% reduction).

Compressing https://i.alza.cz/Foto/ImgGalery/bannery/leaderboard/810/19356.jpg could save 21.4KiB (38% reduction).
Compressing https://i.alza.cz/Foto/ImgGalery/bannery/leaderboard/810/11392_3.jpg could save 16.3KiB (38% reduction).
Compressing https://i.alza.cz/Foto/ImgGalery/st-alzapremium.png could save 1.7KiB (14% reduction).
Compressing https://i.alza.cz/Styles/full/images/sprites/loginBtns.png could save 1.6KiB (17% reduction).
Compressing https://i.alza.cz/Foto/f8/BE/BE330bf3g5.jpg could save 591B (13% reduction).
Compressing https://i.alza.cz/Foto/f8/PA/PA006g2.jpg could save 531B (12% reduction).

alza.cz Desktop Resources

Total Resources99
Number of Hosts21
Static Resources64
JavaScript Resources21
CSS Resources5

alza.cz Desktop Resource Breakdown

alza.cz mobile page speed rank

Last tested: 2017-04-25


Mobile Speed Bad
46/100

alza.cz Mobile Speed Test Quick Summary


priority - 64 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 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://i.alza.cz/Scripts/default-mobile-1a5d1dc3a…ac05e1fbeb33c3a92de.js
https://i.alza.cz/Scripts/defaultPage-mobile-bc4ab…cbbb19b38827c26c047.js

Optimize CSS Delivery of the following:

https://i.alza.cz/Styles/global-mobile-ffdf94c6584…76d347f157d9f0ff07.css
https://i.alza.cz/Styles/other-mobile-b35ac0f5fea6…edd4526eaa2dbeaaff.css

priority - 51 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://alza.cz/
https://www.alza.cz/
http://m.alza.cz/default.aspx
https://m.alza.cz/default.aspx

priority - 8 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 55% of the final above-the-fold content could be rendered with the full HTML response.

priority - 4 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://www.googletagmanager.com/gtm.js?id=GTM-K8N2RL (15 minutes)
https://connect.facebook.net/cs_CZ/all.js (20 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/851404928299796?v=stable (20 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://m.alza.cz/Scripts/lang-CZ-2716852924.js (5.6 days)

priority - 3 Optimize images

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

Optimize the following images to reduce their size by 28.7KiB (41% reduction).

Compressing https://i.alza.cz/Foto/ImgGalery/bannery/leaderboard/414/19693.jpg could save 11KiB (42% reduction).
Compressing https://i.alza.cz/Foto/ImgGalery/bannery/leaderboard/414/19356.jpg could save 9.7KiB (39% reduction).
Compressing https://i.alza.cz/Foto/ImgGalery/bannery/leaderboard/414/11392_3.jpg could save 7.9KiB (41% reduction).

alza.cz Mobile Resources

Total Resources48
Number of Hosts15
Static Resources23
JavaScript Resources11
CSS Resources2

alza.cz Mobile Resource Breakdown

alza.cz mobile page usability

Last tested: 2017-04-25


Mobile Usability Good
99/100

alza.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 <a href="/" class="sel">Alza</a> is close to 1 other tap targets.

alza.cz Mobile Resources

Total Resources48
Number of Hosts15
Static Resources23
JavaScript Resources11
CSS Resources2

alza.cz Mobile Resource Breakdown

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alza.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.


alza.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.