viessmann.cz Website Information
Daily Unique Visits: 848
Daily Page Views: 1,696
Income Per Day: $5
Estimated Value: $1,200
viessmann.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 T-Systems International GmbH. See the full list of other websites hosted by T-Systems International GmbH.
The highest website viessmann.cz position in Alexa rank database was 8428 and the lowest rank position was 999999. Current position of viessmann.cz in Alexa rank database is 845279.
Desktop speed score of viessmann.cz (74/100) shows that the page desktop performance can be improved.
Mobile usability score of viessmann.cz (100/100) means that the page is mobile-friendly.
Mobile speed score of viessmann.cz (55/100) shows that the landing page performance on mobile devices is poor and can be improved.
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viessmann.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.
viessmann.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.
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% 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.
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% Whoisd Server Version: 3.13.0
% Timestamp: Sun Dec 17 14:49:03 2023
domain: viessmann.cz
registrant: TFD2974302504
admin-c: TFD2974302504
nsset: NSSET-KEYSY-BR-N-CZ-OEOLWA
registrar: REG-KEYSYSTEMS
registered: 29.03.2001 18:01:00
changed: 31.10.2023 12:21:26
expire: 29.03.2024
contact: TFD2974302504
org: Viessmann Werke GmbH & Co KG
name: Thimo Dittmann
address: Viessmannstr. 1
address: Allendorf
address: 35108
address: DE
registrar: REG-KEYSYSTEMS
created: 15.01.2020 12:44:22
nsset: NSSET-KEYSY-BR-N-CZ-OEOLWA
nserver: auth04.ns.de.uu.net
nserver: auth54.ns.de.uu.net
tech-c: HBV1642828427
registrar: REG-KEYSYSTEMS
created: 15.01.2020 12:44:23
contact: HBV1642828427
org: Verizon Deutschland GmbH
name: Hostmaster Verizon
address: Sebrathweg 20
address: Dortmund
address: 44149
address: DE
registrar: REG-KEYSYSTEMS
created: 25.06.2019 14:54:31
changed: 07.12.2022 12:01:12
viessmann.cz server information
Servers Location
viessmann.cz desktop page speed rank
Last tested: 2017-09-15
viessmann.cz Desktop Speed Test Quick Summary
priority - 22Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 4 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.viessmann.cz/etc/clientlibs/granite/jquery.min.js
https://www.viessmann.cz/etc/clientlibs/granite/utils.min.js
https://www.viessmann.cz/etc/clientlibs/granite/jquery/granite.min.js
Optimize CSS Delivery of the following:
https://www.viessmann.cz/etc/clientlibs/viessmann/…99843878321-lc.min.css
https://fast.fonts.net/t/1.css?apiType=css&project…43ac-b8c5-2c4809e5a450
priority - 7Avoid 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://www.viessmann.cz/
https://www.viessmann.cz/
priority - 3Leverage 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://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/424786347912951?v=2.7.21 (20 minutes)
https://connect.facebook.net/signals/plugins/identity.js?v=2.7.21 (20 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.viessmann.cz/libs/granite/csrf/token.json (6 hours)
priority - 2Prioritize 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.
priority - 0Minify 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 660B (11% reduction).
viessmann.cz Desktop Resource Breakdown
| Total Resources | 67 |
| Number of Hosts | 12 |
| Static Resources | 52 |
| JavaScript Resources | 17 |
| CSS Resources | 3 |
viessmann.cz mobile page speed rank
Last tested: 2017-09-15
viessmann.cz Mobile Speed Test Quick Summary
priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 4 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.viessmann.cz/etc/clientlibs/granite/jquery.min.js
https://www.viessmann.cz/etc/clientlibs/granite/utils.min.js
https://www.viessmann.cz/etc/clientlibs/granite/jquery/granite.min.js
Optimize CSS Delivery of the following:
https://www.viessmann.cz/etc/clientlibs/viessmann/…99843878321-lc.min.css
priority - 26Avoid 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://www.viessmann.cz/
https://www.viessmann.cz/
priority - 8Prioritize 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.
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:
https://connect.facebook.net/en_US/fbevents.js (20 minutes)
https://connect.facebook.net/signals/config/424786347912951?v=2.7.21 (20 minutes)
https://connect.facebook.net/signals/plugins/identity.js?v=2.7.21 (20 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.viessmann.cz/libs/granite/csrf/token.json (6 hours)
priority - 0Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 4KiB (14% reduction).
Compressing https://www.viessmann.cz/content/dam/vi-brands/DE/…ginal./markenwerte.jpg could save 1.7KiB (14% reduction).
priority - 0Minify 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 660B (11% reduction).
viessmann.cz Mobile Resource Breakdown
| Total Resources | 66 |
| Number of Hosts | 12 |
| Static Resources | 51 |
| JavaScript Resources | 17 |
| CSS Resources | 3 |
viessmann.cz mobile page usability
Last tested: 2017-09-15
viessmann.cz HTML validation
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viessmann.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.
viessmann.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.