osu.cz Website Information
Daily Unique Visits: 10,020
Daily Page Views: 50,100
Income Per Day: $125
Estimated Value: $75,000
This website is located in Czech Republic and is using following IP address 78.128.128.25. See the complete list of popular websites hosted in Czech Republic.
osu.cz is registered under .CZ top-level domain. Please check other sites in .CZ zone.
Website osu.cz is using the following name servers:
- oudec.osu.cz
- albert.osu.cz
- nsa.ces.net
and is probably hosted by CESNET z.s.p.o.. See the full list of other websites hosted by CESNET z.s.p.o..
The highest website osu.cz position in Alexa rank database was 17370 and the lowest rank position was 969321. Current position of osu.cz in Alexa rank database is 135983.
Desktop speed score of osu.cz (57/100) is better than the results of 31.79% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of osu.cz (60/100) is better than the results of 3.95% of other sites and means that the page is not mobile-friendly.
Mobile speed score of osu.cz (47/100) is better than the results of 28.68% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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osu.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.
osu.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 May 04 14:23:34 2021
domain: osu.cz
registrant: SB:PF65_XX
admin-c: SB:PF65_XX
admin-c: KOZELSKY-OSU
nsset: NSS:PF65_XX:1
registrar: REG-INTERNET-CZ
registered: 04.07.1997 02:00:00
changed: 26.09.2017 15:18:21
expire: 24.10.2025
contact: SB:PF65_XX
org: Ostravská univerzita
name: Ostravská univerzita
address: Dvořákova 7
address: Ostrava
address: 701 03
address: CZ
registrar: REG-INTERNET-CZ
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00
contact: KOZELSKY-OSU
org: Ostravská univerzita
name: Martin Kozelský
address: Bráfova 5
address: Ostrava
address: 701 03
address: CZ
registrar: REG-INTERNET-CZ
created: 29.08.2017 11:21:11
changed: 17.01.2020 10:48:04
nsset: NSS:PF65_XX:1
nserver: albert.osu.cz (195.113.106.11, 2001:718:1005:601::11)
nserver: nsa.ces.net
nserver: oudec.osu.cz (195.113.106.10, 2001:718:1005:601::10)
tech-c: SB:PF65_XX
tech-c: P_LOK
tech-c: KOZELSKY-OSU
registrar: REG-INTERNET-CZ
created: 01.10.2007 02:00:00
changed: 23.09.2020 15:15:05
contact: P_LOK
name: Pavla Lokajova
address: Brafova 5
address: Ostrava
address: 701 00
address: CZ
registrar: REG-INTERNET-CZ
created: 18.11.2003 17:20:00
changed: 15.05.2018 21:32:00
%
% 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 May 04 14:23:34 2021
domain: osu.cz
registrant: SB:PF65_XX
admin-c: SB:PF65_XX
admin-c: KOZELSKY-OSU
nsset: NSS:PF65_XX:1
registrar: REG-INTERNET-CZ
registered: 04.07.1997 02:00:00
changed: 26.09.2017 15:18:21
expire: 24.10.2025
contact: SB:PF65_XX
org: Ostravská univerzita
name: Ostravská univerzita
address: Dvořákova 7
address: Ostrava
address: 701 03
address: CZ
registrar: REG-INTERNET-CZ
created: 10.08.2001 22:13:00
changed: 15.05.2018 21:32:00
contact: KOZELSKY-OSU
org: Ostravská univerzita
name: Martin Kozelský
address: Bráfova 5
address: Ostrava
address: 701 03
address: CZ
registrar: REG-INTERNET-CZ
created: 29.08.2017 11:21:11
changed: 17.01.2020 10:48:04
nsset: NSS:PF65_XX:1
nserver: albert.osu.cz (195.113.106.11, 2001:718:1005:601::11)
nserver: nsa.ces.net
nserver: oudec.osu.cz (195.113.106.10, 2001:718:1005:601::10)
tech-c: SB:PF65_XX
tech-c: P_LOK
tech-c: KOZELSKY-OSU
registrar: REG-INTERNET-CZ
created: 01.10.2007 02:00:00
changed: 23.09.2020 15:15:05
contact: P_LOK
name: Pavla Lokajova
address: Brafova 5
address: Ostrava
address: 701 00
address: CZ
registrar: REG-INTERNET-CZ
created: 18.11.2003 17:20:00
changed: 15.05.2018 21:32:00
osu.cz server information
Servers Location
osu.cz desktop page speed rank
Last tested: 2016-11-15
Desktop Speed
Bad
57/100
osu.cz Desktop Speed Test Quick Summary
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priority - 18Leverage browser caching
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priority - 17Reduce server response time
priority - 14Eliminate render-blocking JavaScript and CSS in above-the-fold content
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priority - 6Minify JavaScript
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priority - 1Minify HTML
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priority - 1Optimize images
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osu.cz Desktop Resource Breakdown
| Total Resources | 41 |
| Number of Hosts | 3 |
| Static Resources | 37 |
| JavaScript Resources | 8 |
| CSS Resources | 5 |
osu.cz mobile page speed rank
Last tested: 2016-11-15
Mobile Speed
Bad
47/100
osu.cz Mobile Speed Test Quick Summary
priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 7 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
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http://www.osu.cz/javascript2006/calendar.js
http://www.osu.cz/javascript2006/prototype.js
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priority - 28Leverage browser caching
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priority - 22Enable compression
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priority - 6Minify JavaScript
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osu.cz Mobile Resource Breakdown
| Total Resources | 41 |
| Number of Hosts | 3 |
| Static Resources | 37 |
| JavaScript Resources | 8 |
| CSS Resources | 5 |
osu.cz mobile page usability
Last tested: 2016-11-15
Mobile Usability
Bad
60/100
osu.cz Mobile Usability Test Quick Summary
priority - 40Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
Věda, výzkum, tvorba and 12 others render only 4 pixels tall (11 CSS pixels).Portál OU renders only 4 pixels tall (11 CSS pixels).telefon: 597 0…1, 553 461 111 and 7 others render only 4 pixels tall (11 CSS pixels).Dvořákova 7 and 9 others render only 4 pixels tall (11 CSS pixels).Studenti a zaměstnanci and 10 others render only 5 pixels tall (12 CSS pixels).Centrum excele…zzy modelování and 69 others render only 4 pixels tall (11 CSS pixels).AKTUALITY renders only 5 pixels tall (12 CSS pixels).OU@LIVE: and 6 others render only 4 pixels tall (11 CSS pixels).07. 02. 2017 - 10. 02. 2017 and 9 others render only 4 pixels tall (11 CSS pixels).© Ostravská un…ta 2006 - 2016 renders only 4 pixels tall (10 CSS pixels).Ostravská univ…1 03 Ostrava 1 and 9 others render only 4 pixels tall (10 CSS pixels).podatelna and 8 others render only 4 pixels tall (10 CSS pixels).Technický kontakt and 6 others render only 4 pixels tall (10 CSS pixels).priority - 20Size 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="./index.php?ka…zav)osu(tec)cz">studiumosucz</a> and 10 others are close to other tap targets.The tap target
<input id="search_input" type="text" name="search"> is close to 2 other tap targets.The tap target
<input type="submit" class="submitsearch"> is close to 3 other tap targets.The tap target
<a href="./index.php?kategorie=4" class="ahlava-foto-menu1">Studium</a> and 3 others are close to other tap targets.The tap target
<a href="http://fss.osu.cz">Fakulta sociálních studií</a> and 84 others are close to other tap targets.The tap target
<a href="http://alive.o…li-memorandum/">OU@LIVE: Ostra…imátorem města</a> and 6 others are close to other tap targets.The tap target
<a href="./index.php?ka…zav)osu(tec)cz" class="apata">studiumosucz</a> and 8 others are close to other tap targets.The tap target
<a href="http://www.you…vskaUniverzita">YouTube</a> and 5 others are close to other tap targets.priority - 10Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
osu.cz HTML validation
Errors
Bad value “X-Webkit-CSP” for attribute “http-equiv” on element “meta”.
Line: 58 Column: 1 - 68
"...quests"> <meta http-equiv="X-Webkit-CSP" content="upgrade-insecure-requests"> <meta..."
"...quests"> <meta http-equiv="X-Webkit-CSP" content="upgrade-insecure-requests"> <meta..."
Bad value “” for attribute “alt” on element “input”: Must not be empty.
Line: 133 Column: 33 - 107
"...earchdiv"><input type="image" src="https://www.osu.cz/grafika2016/search.jpg" alt=""><input..."
"...earchdiv"><input type="image" src="https://www.osu.cz/grafika2016/search.jpg" alt=""><input..."
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Line: 773 Column: 25 - 148
"... <iframe width="100%" height="auto" src="https://www.youtube-nocookie.com/embed/PQBzPInvVJQ" frameborder="0" allowfullscreen></ifra..."
"... <iframe width="100%" height="auto" src="https://www.youtube-nocookie.com/embed/PQBzPInvVJQ" frameborder="0" allowfullscreen></ifra..."
Bad value “auto” for attribute “height” on element “iframe”: Expected a digit but saw “a” instead.
Line: 773 Column: 25 - 148
"... <iframe width="100%" height="auto" src="https://www.youtube-nocookie.com/embed/PQBzPInvVJQ" frameborder="0" allowfullscreen></ifra..."
"... <iframe width="100%" height="auto" src="https://www.youtube-nocookie.com/embed/PQBzPInvVJQ" frameborder="0" allowfullscreen></ifra..."
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Line: 773 Column: 25 - 148
"... <iframe width="100%" height="auto" src="https://www.youtube-nocookie.com/embed/PQBzPInvVJQ" frameborder="0" allowfullscreen></ifra..."
"... <iframe width="100%" height="auto" src="https://www.youtube-nocookie.com/embed/PQBzPInvVJQ" frameborder="0" allowfullscreen></ifra..."
Duplicate attribute “title”.
Line: 939 Column: - 113
"...="_blank" title="instagram"><i..." Line: 941 Column: - 122
"...="_blank" title="facebook"><im..." Line: 943 Column: - 118
"...="_blank" title="youtube"><img..." Line: 945 Column: - 112
"...="_blank" title="twitter"><img..." Line: 947 Column: - 256
"...="_blank" title="linked in"><i..." Line: 949 Column: - 101
"...="_blank" title="rss"><img src..."
"...="_blank" title="instagram"><i..." Line: 941 Column: - 122
"...="_blank" title="facebook"><im..." Line: 943 Column: - 118
"...="_blank" title="youtube"><img..." Line: 945 Column: - 112
"...="_blank" title="twitter"><img..." Line: 947 Column: - 256
"...="_blank" title="linked in"><i..." Line: 949 Column: - 101
"...="_blank" title="rss"><img src..."
Stray end tag “a”.
Line: 968 Column: 485 - 488
".../span></a></a><br><a..." Line: 968 Column: 704 - 707
".../span></a></a></p> ..."
".../span></a></a><br><a..." Line: 968 Column: 704 - 707
".../span></a></a></p> ..."
The “itemprop” attribute was specified, but the element is not a property of any item.
Line: 72 Column: 1 - 53
"...cs_CZ" /> <meta itemprop="name" content="Ostravská univerzita"> <link..."
"...cs_CZ" /> <meta itemprop="name" content="Ostravská univerzita"> <link..."
Warnings
The “navigation” role is unnecessary for element “nav”.
Line: 139 Column: 7 - 29
"...-> <nav role="navigation"> ..."
"...-> <nav role="navigation"> ..."
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osu.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.
osu.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.