csef.cz Csef.cz

   
ČSEF je ve výstavbě

Domain Summary

What IP addresses does Csef.cz resolve to?

• Csef.cz resolves to the IP addresses 81.95.110.21.

Where are Csef.cz servers located in?

• Csef.cz has servers located in Prague, Prague, 186 00, Czechia.

csef.cz Profile

Title:ČSEF je ve výstavbě Description:ČSEF – SPOLUPRÁCE, ZNALOSTI, INOVACE
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What technologies does csef.cz use?

These are the technologies used at csef.cz. csef.cz has a total of 8 technologies installed in 10 different categories.
Databases
MySQL MySQL
Web Servers
Nginx Nginx
Reverse proxies
Nginx Nginx
Programming Languages
PHP PHP
Caching
W3 Total Cache W3 Total Cache
WordPress plugins
W3 Total Cache W3 Total Cache
WebFactory Under Construction WebFactory Under Construction
CMS
WordPress WordPress
Blogs
WordPress WordPress
CDN
Bunny Bunny
Font Scripts
Bunny Fonts Bunny Fonts

csef.cz Traffic Analysis

There's no enough data about csef.cz traffic.
Daily Visitors n/a
Monthly Visits n/a
Pages per Visit n/a
Visit duration n/a
Bounce Rate n/a
Is this your site?Verify your site's metrics.
Daily Unique Visitors:
 n/a
Monthly Visits:
n/a
Pages per Visit:
n/a
Daily Pageviews:
n/a
Avg. visit duration:
n/a
Bounce rate:
n/a
Global Reach:
 n/a
HypeRank:
n/a
*All traffic values are estimates only.

Total Visits Last 3 Months

543
APR
0
MAY
0
JUN

  ▼

SEMrush is a complete on line advertising and marketing platform that gives a extensive variety of gear and functions to help companies and entrepreneurs in enhancing their on line visibility and optimizing their virtual advertising and marketing strategies.
SemRushSemRush
Domain:
  csef.cz
Rank:
(Rank based on keywords, cost and organic traffic)
  n/a
Organic Keywords:
(Number of keywords in top 20 Google SERP)
  0
Organic Traffic:
(Number of visitors coming from top 20 search results)
  0
Organic Cost:
((How much need to spend if get same number of visitors from Google Adwords)
  $0.00
Full SEMrush Report >>
Last update was 29 mins ago
     
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*HypeStat.com is not promoting or affiliated with csef.cz in any way. Only publicly available statistics data are displayed.

Ad Experience Report ▼

Summary of the ad experience rating of a website for a specific platform.

Mobile summary

Root domain:
csef.cz
Ad filtering:
(Chrome is not filtering ads on your site.)
Off
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Not reviewed

Desktop summary

Root domain:
csef.cz
Ad filtering:
(Chrome is not filtering ads on your site.)
Off
Status:
(The status of the site that is reviewed for the Better Ads Standards.)
Not reviewed

Abusive Experience Report ▼

Summary of the abusive experience rating of a website.
Root domain:
csef.cz
Enforcement:
(Chrome is not preventing your site from opening new windows or tabs.)
Off
Status:
(The status of the site reviewed for the abusive experiences.)
Not reviewed

Where is csef.cz hosted? ▼

Csef.cz may be hosted in multiple data centers distributed in different locations around the world. This is probably just one of them.
Server IP:
81.95.110.21
ASN:
AS25234 
ISP:
ACTIVE 24 
Server Location:
Prague
Prague, 10
186 00
Czechia, CZ
 

Other sites hosted on 81.95.110.21

How fast does csef.cz load? ▼

The average loading time of csef.cz is 87 ms. The Desktop speed index is 100 and mobile speed index is 96.
Average Load Time:
87 ms

Page Speed (Google PageSpeed Insights) - Desktop

100
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average (0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0ms) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average 0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interaction To Next Paint (INP)0 0% of loads for this page have a fast (<0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Interaction To Next Paint (INP) 0% 0% of loads for this page have a slow (>0ms) Interaction To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0ms ~ 0ms) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0ms) Largest Contentful Paint (LCP) 0%

Lab Data

First Contentful Paint 0.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
INP breakdown  
Start investigating by looking at the longest subpart. how to improve INP
Max Potential First Input Delay 20 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric
LCP request discovery  
by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading Optimize LCP
Time to Interactive 0.5 s
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric
Largest Contentful Paint 0.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
Speed Index 0.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric

Page Speed (Google PageSpeed Insights) - Mobile

96
0-49 50-89 90-100 i

Field Data

Over the last 30 days, the field data shows that this page has a speed compared to other pages in the Chrome User Experience Report.We are showing the 90th percentile of FCP and the 95th percentile of FID.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average (0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interactive To Next Paint (INP)0 0% of loads for this page have a fast (<0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have an average (0s ~ 0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have a slow (>0s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0s) Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0s ~ 0s) Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0s) Largest Contentful Paint (LCP) 0%

Origin Data

All pages served from this origin have an speed compared to other pages in the Chrome User Experience Report. over the last 30 days.To view suggestions tailored to each page, analyze individual page URLs.

Cumulative Layout Shift (CLS)0 0% of loads for this page have a fast (<0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have an average (0s ~ 0s) Cumulative Layout Shift (CLS) 0% 0% of loads for this page have a slow (>0s) Cumulative Layout Shift (CLS) 0%
Time To First Byte (TTFB)0 0% of loads for this page have a fast (<0s) Time To First Byte (TTFB) 0% 0% of loads for this page have an average (0s ~ 0s) Time To First Byte (TTFB) 0% 0% of loads for this page have a slow (>0s) Time To First Byte (TTFB) 0%
First Contentful Paint (FCP)0 0% of loads for this page have a fast (<0s) First Contentful Paint (FCP) 0% 0% of loads for this page have an average (0s ~ 0s) First Contentful Paint (FCP) 0% 0% of loads for this page have a slow (>0s) First Contentful Paint (FCP) 0%
First Input Delay (FID)0 0% of loads for this page have a fast (<0ms) First Input Delay (FID) 0% 0% of loads for this page have an average 0ms ~ 0ms) First Input Delay (FID) 0% 0% of loads for this page have a slow (>0ms) First Input Delay (FID) 0%
Interactive To Next Paint (INP)0 0% of loads for this page have a fast (<0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have an average (0s ~ 0s) Interactive To Next Paint (INP) 0% 0% of loads for this page have a slow (>0s) Interactive To Next Paint (INP) 0%
Largest Contentful Paint (LCP)0 0% of loads for this page have a fast (<0s)Largest Contentful Paint (LCP) 0% 0% of loads for this page have an average (0s ~ 0s)Largest Contentful Paint (LCP) 0% 0% of loads for this page have a slow (>0s)Largest Contentful Paint (LCP) 0%

Lab Data

LCP request discovery  
by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading Optimize LCP
Largest Contentful Paint 2.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric
First Contentful Paint 2.1 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric
Speed Index 2.7 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric
Time to Interactive 2.1 s
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric
Total Blocking Time 0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric
Max Potential First Input Delay 20 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric
INP breakdown  
Start investigating by looking at the longest subpart. how to improve INP

Does csef.cz use compression? ▼

Website compression is the process of reducing the size of website files, such as HTML, CSS, JavaScript, and image files, to improve website performance and load times. Compressing website files can significantly reduce the amount of data that needs to be transferred from the server to the user's browser, resulting in faster page load times and improved user experience. Files on csef.cz are reduced by 55%.
csef.cz use gzip compression.
Original size: 3.02 KB
Compressed size: 1.33 KB
File reduced by: 1.68 KB (55%)

Google Safe Browsing ▼

Google Safe Browsing is a service provided by Google that helps protect users from visiting websites that may contain malicious or harmful content, such as malware, phishing attempts, or deceptive software.
This site is not currently listed as suspicious

MyWot.com Reputation Ratings

MyWOT (short for "My Web of Trust") is a web-based reputation and rating service that provides users with information about the trustworthiness and safety of websites.
Status:
  SAFE

SSL Checker - SSL Certificate Verify ▼

An SSL (Secure Sockets Layer) certificate is a digital certificate that establishes a secure encrypted connection between a web server and a user's web browser. It provides authentication and encryption, ensuring that data transmitted between the server and the browser remains private and protected. csef.cz supports HTTPS.
 csef.cz supports HTTPS
     
Verifying SSL Support. Please wait...
Common Name: www.csef.cz
Organization:
Location:
Issuer: YE2
Valid from: Jul 16 22:25:46 2026 GMT
Valid until: Oct 14 22:25:45 2026 GMT
Authority: CA:FALSE
Keysize:
Common Name: YE2
Organization: Let's Encrypt
Location: US
Issuer: Root YE
Valid from: Sep 3 00:00:00 2025 GMT
Valid until: Sep 2 23:59:59 2028 GMT
Authority: CA:TRUE
Keysize:
Common Name: Root YE
Organization: ISRG
Location: US
Issuer: ISRG Root X2
Valid from: May 13 00:00:00 2026 GMT
Valid until: Sep 2 23:59:59 2032 GMT
Authority: CA:TRUE
Keysize:
Common Name: ISRG Root X2
Organization: Internet Security Research Group
Location: US
Issuer: ISRG Root X1
Valid from: May 13 00:00:00 2026 GMT
Valid until: Sep 2 23:59:59 2032 GMT
Authority: CA:TRUE
Keysize:

Verify HTTP/2 Support ▼

HTTP/2 (Hypertext Transfer Protocol version 2) is a major revision of the HTTP protocol, which is the foundation of data communication on the World Wide Web. It was developed as an improvement over the previous HTTP/1.1 version to enhance web performance and efficiency.
 csef.cz supports HTTP/2
     
Verifying HTTP/2.0 Support. Please wait...

Http Header ▼

HTTP headers are extra portions of records despatched among a consumer (which include an internet browser) and a server at some stage in an HTTP request or response. They offer instructions, metadata, or manipulate parameters for the conversation among the consumer and server. 
server: nginx
date: Sat, 08 Aug 2026 18:33:35 GMT
content-type: text/html; charset=UTF-8
content-length: 1364
vary: X-Forwarded-Proto,Accept-Encoding
last-modified: Sat, 08 Aug 2026 18:32:07 GMT
etag: "554-6588d56a4cc1b"
accept-ranges: bytes
referrer-policy: no-referrer-when-downgrade
content-encoding: gzip
content-security-policy: upgrade-insecure-requests

DNS Lookup ▼

DNS entries (Domain Name System) are a critical component of the Internet infrastructure. They act as directories that translate human-readable domain names (such as example.com) to machine-readable IP addresses. DNS records are stored on DNS servers and help forward internet traffic efficiently.
Type Ip Target/Txt TTL
SOA 86400
Mname alfa.ns.active24.cz
Rname hostmaster.active24.cz
Serial Number 2025072504
Refresh 10800
Retry 1800
Expire 1209600
Minimum TTL 3600

Whois Lookup ▼

Domain WHOIS is a public database that provides information about domain names, including registered owners, contact information, domain registrars, registration and expiration dates, name servers, and other relevant information. Domain registration for this website began on June 17, 2019 and will expire on June 17, 2027 if not renewed. This website is now assigned through the registrar ACTIVE 24, s.r.o.. The WHOIS data for this website's domain was last updated on June 4, 2026.
Domain Created:
2019-06-17
Domain Expires:
2027-06-17
Domain Updated:
2026-06-04
Domain Age:
7 years 1 months 21 days
Domain Registrar:
ACTIVE 24, s.r.o.
Domain Owner:
Asociace energetických manažerů
WhoIs:
 

%  (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: 3.15.0
% Timestamp: Sat Aug 08 20:34:03 2026

domain:       csef.cz
registrant:   A24CONTACT-125783
nsset:        A24-NSSET
registrar:    REG-ACTIVE24
registered:   17.06.2019 08:08:57
changed:      04.06.2026 16:07:32
expire:       17.06.2027

contact:      A24CONTACT-125783
org:          Asociace energetických manažerů
name:         Asociace energetických manažerů
address:      Ortenovo nám. 15a
address:      Praha 7
address:      17000
address:      CZ
registrar:    REG-ACTIVE24
created:      17.06.2019 08:08:53
changed:      17.06.2019 10:01:41

nsset:        A24-NSSET
nserver:      alfa.ns.active24.cz (81.95.96.2, 2a02:4a8:ac24:100::96:2)
nserver:      gama.ns.active24.sk 
nserver:      beta.ns.active24.cz (185.111.90.94, 2a00:4b40:1000:590:185:111:90:94)
tech-c:       ACTIVE24
registrar:    REG-ACTIVE24
created:      15.07.2019 11:07:48
changed:      11.12.2024 09:22:21

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
registrar:    REG-ACTIVE24
created:      29.04.2008 12:35:02
changed:      15.05.2018 21:32:00