CSA.CZ Letenky ČSA – online rezervace – České aerolinie


csa.cz website information.

csa.cz website servers are located in Netherlands and are responding from following IP address 13.94.143.57. Check the full list of most visited websites located in Netherlands.

csa.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 csa.cz domain:

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

and probably website csa.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 csa.cz position was 11532 (in the world). The lowest Alexa rank position was 868182. Current position of csa.cz in Alexa rank database is below 1 million.

Website csa.cz Desktop speed measurement score (47/100) is better than the results of 16.78% of other sites shows that the page desktop performance can be improved.

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

Mobile speed measurement score of csa.cz (15/100) is better than the results of 1.41% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Sep-29-2020 N/AN/A
Sep-28-2020 N/AN/A
Sep-27-2020 N/AN/A
Sep-26-2020 N/AN/A
Sep-25-2020 N/AN/A
Sep-24-2020 N/AN/A
Sep-23-2020 N/AN/A

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csa.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.


csa.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) 2006-2016 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: 3.10.0
% Timestamp: Thu Feb 11 15:20:16 2016

domain: csa.cz
registrant: CSA
admin-c: CSA
nsset: NSS:GLOBE-SGLO000001:1
keyset: A24-KEYSET
registrar: REG-ACTIVE24
registered: 08.08.1996 02:00:00
changed: 04.02.2016 11:45:51
expire: 27.10.2017

contact: CSA
org: České aerolinie a.s.
name: České aerolinie
address: Jana Kašpara 1069/1
address: Praha 6
address: 160 08
address: CZ
e-mail: domain.admin@csa.cz
registrar: REG-ACTIVE24
created: 02.10.2015 08:39:36
changed: 04.02.2016 11:44:57

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

csa.cz server information

Servers Location

csa.cz desktop page speed rank

Last tested: 2016-10-09


Desktop Speed Bad
47/100

csa.cz Desktop Speed Test Quick Summary


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csa.cz Desktop Resources

Total Resources185
Number of Hosts54
Static Resources58
JavaScript Resources43
CSS Resources15

csa.cz Desktop Resource Breakdown

csa.cz mobile page speed rank

Last tested: 2018-01-15


Mobile Speed Bad
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csa.cz Mobile Speed Test Quick Summary


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Compressing https://csaupcdnep01.azureedge.net/cache/b/b/9/b/9…bb9bf5a5292c6e3e44.jpg could save 930.4KiB (90% reduction).
Compressing https://csaupcdnep01.azureedge.net/cache/9/4/3/f/5…6ffbc46006b4a48436.jpg could save 927.3KiB (90% reduction).
Compressing https://csaupcdnep01.azureedge.net/cache/d/f/9/c/d…025cb31f532ab35fff.jpg could save 833.4KiB (81% reduction).
Compressing https://www.csa.cz/media/1067/booking-form-bg.jpg could save 140.2KiB (67% reduction).
Compressing https://csaupcdnep01.azureedge.net/cache/7/b/7/b/2…3afccfaae6a1469f4d.png could save 127.7KiB (99% reduction).
Compressing https://csaupcdnep01.azureedge.net/cache/a/d/a/a/d…d98baa1df40eaa68f3.png could save 127.5KiB (99% reduction).
Compressing https://csaupcdnep01.azureedge.net/cache/1/5/a/7/d…dca7f472f16e001337.png could save 127.3KiB (99% reduction).
Compressing https://csaupcdnep01.azureedge.net/cache/3/6/b/1/a…060aac0b1cda795a1b.png could save 120.6KiB (94% reduction).
Compressing https://www.csa.cz/media/1594/booking-form-bg-pattern.jpg could save 12.8KiB (85% reduction).
Compressing https://www.csa.cz/media/1059/plane-tail-footer.jpg could save 2.2KiB (66% reduction).
Compressing https://www.csa.cz/media/1062/footer-delimiter.jpg could save 1.2KiB (66% reduction).
Compressing https://www.csa.cz/media/1114/footer-menu-arrow-off-2x.png could save 1KiB (71% reduction).
Compressing https://www.csa.cz/media/1088/top-info-close-blue-2x.png could save 388B (35% reduction).
Compressing https://www.csa.cz/media/1111/m_nav-burger-2x.png could save 134B (32% reduction).

priority - 40 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 11 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://assets.adobedtm.com/bd9b7570ee863611aa0d4c…b31d180ccbda9821959.js
https://www.csa.cz/scripts/modernizr-custom.js?sv=8
https://www.csa.cz/scripts/libs.js?sv=8
https://www.csa.cz/scripts/main.js?sv=8
https://www.csa.cz/scripts/forms.js?sv=8
https://www.csa.cz/scripts/vue.min.js?sv=8
https://www.csa.cz/scripts/flatpickr/l10n/cs.js?sv=8
https://www.csa.cz/scripts/helpers/destinationstorage.js?v=3
https://www.csa.cz/scripts/booking_form.js?v=3
https://www.csa.cz/scripts/jquery.matchHeight-min.js
https://www.google.com/recaptcha/api.js?onload=initCaptcha&render=explicit

Optimize CSS Delivery of the following:

https://www.csa.cz/css/bootstrap.min.css?sv=8
https://www.csa.cz/css/main.css?sv=8

priority - 18 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://assets.adobedtm.com/bd9b7570ee863611aa0d4c…3075f37b82d397a8bad.js (expiration not specified)
https://assets.adobedtm.com/bd9b7570ee863611aa0d4c…b31d180ccbda9821959.js (expiration not specified)
https://assets.adobedtm.com/bd9b7570ee863611aa0d4c…c4e64746d1ed500172d.js (expiration not specified)
https://dc.services.visualstudio.com/v2/track (expiration not specified)
https://www.csa.cz/fonts/Roboto-Light.ttf (expiration not specified)
https://www.csa.cz/fonts/Roboto-Medium.ttf (expiration not specified)
https://www.csa.cz/fonts/Roboto-Regular.ttf (expiration not specified)
https://www.csa.cz/scripts/jquery.matchHeight-min.js (expiration not specified)
https://www.google.com/recaptcha/api.js?onload=initCaptcha&render=explicit (5 minutes)
https://az416426.vo.msecnd.net/scripts/a/ai.0.js (10 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-SPVD (15 minutes)
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/204323…33621?v=2.8.6&r=stable (20 minutes)
https://connect.facebook.net/signals/plugins/iwl.js?v=2.8.6 (20 minutes)
https://www.dwin1.com/10338.js (60 minutes)
https://www.google-analytics.com/plugins/ua/linkid.js (60 minutes)
https://www.googleadservices.com/pagead/conversion_async.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.csa.cz/media/1059/plane-tail-footer.jpg (24 hours)
https://www.csa.cz/media/1062/footer-delimiter.jpg (24 hours)
https://www.csa.cz/media/1067/booking-form-bg.jpg (24 hours)
https://www.csa.cz/media/1087/body-clouds-min.png (24 hours)
https://www.csa.cz/media/1088/top-info-close-blue-2x.png (24 hours)
https://www.csa.cz/media/1111/m_nav-burger-2x.png (24 hours)
https://www.csa.cz/media/1114/footer-menu-arrow-off-2x.png (24 hours)
https://www.csa.cz/media/1594/booking-form-bg-pattern.jpg (24 hours)

priority - 10 Avoid 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://csa.cz/
https://www.csa.cz/
https://www.csa.cz/cz-cs/

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 49% of the final above-the-fold content could be rendered with the full HTML response.

priority - 2 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 20KiB (88% reduction).

Compressing https://www.csa.cz/Umbraco/Api/DestinationCache/Ge…stinations_language=cs could save 20KiB (88% reduction).

priority - 1 Minify 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 5.3KiB (16% reduction).

Minifying https://www.csa.cz/Umbraco/Api/DestinationCache/Ge…stinations_language=cs could save 4.2KiB (19% reduction).
Minifying https://www.csa.cz/cz-cs/ could save 1.1KiB (11% reduction) after compression.

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 3.4KiB (29% reduction).

Minifying https://www.csa.cz/scripts/main.js?sv=8 could save 1.4KiB (27% reduction) after compression.
Minifying https://www.csa.cz/scripts/booking_form.js?v=3 could save 838B (24% reduction) after compression.
Minifying https://connect.facebook.net/signals/plugins/iwl.js?v=2.8.6 could save 645B (86% reduction) after compression.
Minifying https://www.csa.cz/scripts/forms.js?sv=8 could save 305B (22% reduction) after compression.
Minifying https://www.csa.cz/scripts/helpers/destinationstorage.js?v=3 could save 291B (27% reduction) after compression.

priority - 0 Minify 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 499B (13% reduction).

Minifying https://www.csa.cz/css/bootstrap.min.css?sv=8 could save 499B (13% reduction) after compression.

csa.cz Mobile Resources

Total Resources60
Number of Hosts20
Static Resources35
JavaScript Resources28
CSS Resources2

csa.cz Mobile Resource Breakdown

csa.cz mobile page usability

Last tested: 2018-01-15


Mobile Usability Good
100/100

csa.cz Mobile Resources

Total Resources60
Number of Hosts20
Static Resources35
JavaScript Resources28
CSS Resources2

csa.cz Mobile Resource Breakdown

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csa.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.


csa.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.