Favicon of 4-blok.cz 4Blok by Crestyl

4Blok by Crestyl

About 4-blok.cz

4-blok.cz has a global Alexa ranking of 0. The website server is using IP address and is hosted in Czech Republic. The Google page rank of this website is -/10. The website's home page has 33 out-going links. The website taken by REG-INTERNET-CZ for Jan Holub on 07-07-2014. Further informations is provided bellow.

Last Updated: 5 months ago

Site Overview

Screenshot of www.4-blok.cz
Host 4-blok.cz
Ip Address
Country Czech Republic
Domain Age 2
Created Date: 07-07-2014
Updated Date: 27-05-2016
Expired Date: 07-07-2017
Server Apache/2.4.18 (Ubuntu)
Alexa Rank -
Page Rank Google Pagerank of 4-blok.cz
Page Speed 76%
Google Analytic ID UA-25041516-18
Google Tag Manager ID GTM-MMXVR3

Domain Info

4-blok.cz 2 years old and has cz extension. TLD may be using diffrent purposes. Example: .com extension inherited from "commercial" and uses for generally commercial activities, .net extension inherited from "network" and uses for generally internet activites etc. Its SLD length is equal to 6. SLD length is important for human-readable and brand-friendly and seo-friendly. It must be less than 10 and meaningful that you are/will working on activites.

Domain Age 2 years old
TLD (Top Level Domain) cz
SLD (Second Level Domain) 4-blok
SLD Length 6

Whois Info

4-blok.cz registered by REG-INTERNET-CZ for Jan Holub on 07-07-2014. Jan Holub renewed on 05-27-2016 until 07-07-2017.

Important Dates
Registered On 07-07-2014
Exprires On 07-07-2017
Updated On 05-27-2016
Registrar Info
Registrar Name REG-INTERNET-CZ
Registrar Url -
Registrar Organization -
Registrant Info
Registrant Name Jan Holub
Registrant Email -
Registrar Organization MAFRA, a.s.
Country -
Technical Info
Technical Name Jan Holub
Technical Email -
Technical Organization MAFRA, a.s.

Raw Whois Data

%  (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: 3.10.2
% Timestamp: Tue Nov 15 19:34:19 2016

domain:       4-blok.cz
registrant:   MAFRACZ
nsset:        MAFRA1
registrar:    REG-INTERNET-CZ
registered:   07.07.2014 15:05:06
changed:      27.05.2016 16:18:13
expire:       07.07.2017

contact:      MAFRACZ
org:          MAFRA, a.s.
name:         Jan Holub
address:      Karla Engli��e 519/11
address:      Praha 5
address:      150 00
address:      CZ
registrar:    REG-INTERNET-CZ
created:      27.08.2015 14:07:24
changed:      11.05.2016 10:45:17

nsset:        MAFRA1
nserver:      ns.mafra.cz (
nserver:      ns2.mafra.cz (
nserver:      ns.mafracz.net 
tech-c:       MAFRA-CZ
registrar:    REG-INTERNET-CZ
created:      22.09.2008 11:05:08
changed:      06.08.2015 10:43:21

contact:      MAFRA-CZ
org:          MAFRA, a.s.
name:         Jan Holub
address:      Karla Engli��e 519/11
address:      Praha 5
address:      150 00
address:      CZ
registrar:    REG-INTERNET-CZ
created:      11.11.2014 10:12:10
changed:      11.05.2016 10:51:38

GeoIP Info

4-blok.cz serves on -, Czech Republic and establish connection to the internet via Bilejova 407 Internet Service Provider (ISP)

Latitude 50.0848 Longitude 14.4112
City - Country Czech Republic
Country Code CZ Region -
Region Code - Postal Code -
ISP Bilejova 407 Timezone Europe/Prague

DNS Info

A record assigned to

Host Type TTL Class Other
4-blok.cz. SOA 3599 IN ns.mafra.cz. hostmaster.mafra.cz. 2016052501 28800 7200 604800 600
4-blok.cz. TXT 3599 IN "google-site-verification=oxfzdwi88UbsKug8FR-ByE1x6Gck2UDwIsIDbbCEcYA"
4-blok.cz. MX 3599 IN 5 ALT2.ASPMX.L.GOOGLE.COM.
4-blok.cz. MX 3599 IN 10 ASPMX2.GOOGLEMAIL.COM.
4-blok.cz. MX 3599 IN 1 ASPMX.L.GOOGLE.COM.
4-blok.cz. MX 3599 IN 5 ALT1.ASPMX.L.GOOGLE.COM.
4-blok.cz. MX 3599 IN 10 ASPMX3.GOOGLEMAIL.COM.
4-blok.cz. A 3599 IN
4-blok.cz. NS 3599 IN ns2.mafra.cz.
4-blok.cz. NS 3599 IN ns.mafra.cz.
4-blok.cz. NS 3599 IN ns.mafracz.net.

HTTP Header

Status-Code: 200
Response Time: 2677
Date Tue, 15 Nov 2016 18:34:22 GMT
Server Apache/2.4.18 (Ubuntu)
Cache-Control no-cache
Set-Cookie laravel_session=eyJpdiI6Im04dSs3VnhTVHBZc2l2RDczV0JoTGc9PSIsInZhbHVlIjoiWmliZGc2SnkwaFhFOXd2czIrZHhNMzBiT2hCSVRcL0w0M3dYTXlFQ2F1S1wvWHF3UjBLUmVCdEN6WlpzdlRxZzNYZ29GcmY1RmMxaXpQUmJXYkg4alR3QT09IiwibWFjIjoiYTRkOGNhOTkzMmUyYzkwOTM3ODBhNzM5NTIxNGYwNDNhNTkzNzQzNzFiMTIyNWUyYTdjMzY5ZWFkYWNhY2ZmMyJ9; expires=Tue, 15-Nov-2016 20:34:22 GMT; Max-Age=7200; path=/; httponly
Vary Accept-Encoding
Content-Encoding gzip
Keep-Alive timeout=5, max=100
Connection Keep-Alive
Content-Type text/html; charset=UTF-8

HTTP Header

Html tags of 4-blok.cz is listed bellow.

Html Element % Used
div 37 57
a 23 35
li 15 22
script 9 14
span 8 12
img 6 8
noscript 3 4
ul 2 2
nav 1 1
button 1 1
p 1 1

Speed Analysis

User behaviors change everyday. And users aren't patience on the internet. At this point page speed gaining importance. Your pages loading time must be less than 3-5 seconds and response time must be less than or equals 200ms.

4-blok.cz opens too slow with 2677 ms response time. 4-blok.cz loads too slow with 6810 ms page load time.

Page Resources

The bellow graphic illustrates resource sizes the home page of 4-blok.cz. As you can see, Html size is 27.9KB and Text size is 105.0B. This ratios are important for SEO. Text ratio grather than Html Ratio indicates a quality content to Search Engines and a ranking signal.

HTML size 27.9KB
Image resources size 120.8KB
CSS resources size 82.0KB
JS resources size 1.3MB
Number of image resources 18
Number of css resources 2
Number of js resources 71



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