Top .cz Websites & Domains

There are 821,053 active websites across 1,409,508 registered .cz domains (58.3% active). Here are some of the most popular .cz sites, the technologies they run, and the companies behind them.

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Download a free sample of the .cz websites list

Real rows from the list on this page. The file arrives by email.

250 rows
17 columns
CSV

Every column in the file

Popularity Rank
Domain
Company Name
Company Size
Year Founded
Industry
LinkedIn URL
Locality
Country
TLD
Language
Instagram
Twitter
YouTube
TikTok
Technologies Tracked
Premium Technologies

Column headings inside the file are written in English. Not every column is filled for every website.

A look at the file

Domain	Company Name	Technologies Tracked	Premium Technologies
idnes.cz	iDNES.cz	19	2
novinky.cz	Právo	12	0
uoou.gov.cz	Office for Personal Data Protection	11	1
coi.gov.cz	Česká obchodní inspekce	40	3

Total Domains Found: 1.41M
Technologies detected: 32,887
Active websites: 821K (58.3%)

Most popular .cz websites

by popularity

Local rank	Website	Global rank	StackSpend	Technologies detected
1	seznam.cz	788	$1.15M+	Arial Simple Scrollbar Adform WordPress Criteo
2	idnes.cz	1,104	$261K+	Strossle Anthropic Cisco Cloud Services Google Analytics 4 33Across
3	novinky.cz	1,301	$4.75K+	Apple iCloud Mail Google Tag Manager HSTS Express Leaflet
4	livescore.cz	1,705	$3.84K+	Sharethrough Yieldmo OneTag Online Media Solutions ContextWeb
5	google.cz	3,417	$2.88K+	Google Workspace Google Web Server HTTP/3 Google Trust Services HSTS
6	uoou.gov.cz	4,023	$20.5K+	VSHosting IIS Outlook for business Plesk T-Mobile Czech Republic
7	nic.cz	4,824	$5.83K+	Highlight.js Wp Polls Django React Bootstrap Select News Page
8	coi.gov.cz	5,497	$107K+	Google APIs Elementor Pro Menu Icons by ThemeIsle jQuery ImagesLoaded Genially
9	alza.cz	5,714	$16.6K+	Symantec SSL Cloudflare Browser Insights HTTP/3 Anthropic OpenAI
10	muni.cz	6,139	$14.57K+	Google Tag Manager Online Store Page Valimail Harica Microsoft Clarity
11	sportklub.cz	6,194	$554+	PRO-ZETA THINline Český hosting DNS
12	flash-sfx.cz	6,336	$2.2K+	Nette Framework Shoptet Email Open Sans Nette Forms Cookie Script
13	volimtrikoloru.cz	6,364	$5.91K+	Bootstrap WordPress SmartEmailing DMARC WEDOS Internet Google Tag Manager
14	dwarffortress.cz	6,789	$3.81K+	Mootools Google Analytics WEDOS MX WEDOS Internet WEDOS Global Protection
15	csfd.cz	6,846	$4.77K+	Start.io Netlink (netlink.vn) Sonobi Next Millennium Media Cpex
16	nova.cz	6,903	$458K+	Sonobi Video Heroes Cloudflare Bot Solutions OpenAI Sparteo Corporate
17	blesk.cz	6,953	$319K+	GroundTruth Td Cloud Library Conversant Leaflet Smaato
18	windguru.cz	6,985	$4.96K+	Fluct DigiCert LKQD Lijit ConnectAd
19	seznamzpravy.cz	7,148	$1.88K+	Seznam Email Criteo jsDelivr Google Analytics 4 CDN JS
20	boretice.cz	7,217	$3.81K+	Microsoft Windows Server IIS igalileo CDN JS Popper
21	vrbice.cz	7,293	$1.86K+	DigiCert bxSlider ZONER SSL Forpsi DNS jQuery Wookmark
22	cejkovice.cz	7,450	$3.81K+	Forpsi DNS SH.cz igalileo Highslide JS BootstrapCDN (Stackpath)
23	velkebilovice.cz	7,458	$69.75K+	Modernizr Koha HSTS vismo (WEBHOUSE) Google Tag Manager
24	allegro.cz	7,539	$5.62K+	Datadome HTTP/3 Microsoft 365 Meta Business Suite Google Cloud
25	sazka.cz	7,688	$19.92K+	Apple Business Connect H1 Sectigo Statuspage Mailchimp
26	cra.cz	7,834	$417K+	Statuspage Microsoft 365 Google Ads Google Trust Services Apple Business Connect
27	cuni.cz	7,876	$11.02K+	Harica Apple Business Connect Careers Page Google Tag Manager HSTS
28	sport.cz	7,918	$1.87K+	WPartner Seznam Criteo HSTS Microsoft 365
29	bazos.cz	8,053	$392K+	Google Tag Manager SH.cz Cloudflare DNS HSTS CookieConsent
30	super.cz	8,120	$1.87K+	Apple Business Connect HSTS Envoy Index Exchange Sharethrough
31	datart.cz	8,442	$699K+	Heureka Email Outlook for business Sectigo Google Cloud Adobe
32	zidlochovice.cz	8,527	$1.93K+	O2 Czech Republic Google Search Console Outlook for business Regzone DNS SH.cz
33	praha-kunratice.cz	8,601	$42.99K+	WEDOS MX Creative Commons (creativecommons.org) Kerio Connect Google Analytics 4 Drupal
34	krouna.cz	8,718	$3.81K+	BootstrapCDN (Stackpath) igalileo CEZ Distribuce outage banner Microsoft Windows Server Bootstrap
35	livesport.cz	8,741	$8.61K+	Yahoo Advertising Sovrn MobFox ADman Media OneTag
36	obehani.cz	8,767	$1.7K+	Google Analytics 4 GumGum Sharethrough Teads AdaptMX (AMX)
37	hostivice.cz	8,889	$8.34K+	Angular Ui Date Collapse-O-Matic Scrollbar Vodafone Czech Republic News Page
38	bohunov.cz	8,934	$3.86K+	Antee Email Nette Framework Matomo Analytics Nofollow Links Google reCAPTCHA
39	extra.cz	8,967	$258K+	Bidence IncrementX Bright Mountain Media News Page Edge226
40	obec-kysice.cz	8,979	$36.19K+	Highslide JS Swiper CEZ Distribuce outage banner CDN JS VirtualTravel.cz
41	kupi.cz	9,010	$84.89K+	HSTS Firebase Analytics Criteo Careers Page Mailchimp
42	tjsokolprahakrc.cz	9,021	$1.87K+	Maxcdn Facebook HTML5 Shiv Actalis Aruba
43	toprecepty.cz	9,071	$164K+	33Across Mailgun Criteo GroundTruth Media.net
44	tgmstafeta2020.cz	9,076	$99+	WEDOS Internet Wedos DNS
45	freevideo.cz	9,272	$9.22K+	Google Workspace HTTP/3 Cloudflare DMARC Cloudflare Vue.js
46	idos.cz	9,390	$139K+	Yahoo Advertising TripleLift AppAds FreeWheel Microsoft Mvc
47	sportklubnovemestonm.cz	9,626	$1.62K+	Google Search Console CodeIgniter THINline Meta Business Suite HSTS
48	sdn.cz	10,296	$10+	Envoy Google Search Console Seznam
49	mostbet-apk.cz	10,436	$1.73K+	Wpbakery Yoast SEO Google Analytics 4 Godaddy DNS StickyKit
50	prehrajto.cz	10,448	$99.38K+	Cloudflare DNS Google Workspace Webglobe Nette Framework Nette Forms

This is 50 of 1,409,508 websites in .cz. Filter the full index by stack, keyword and location, then export it as CSV.

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Language usage on .cz websites

by websites

01 Czech 404,081 77.1%
02 English 114,381 21.8%
03 Slovak 2,303 0.4%
04 German 1,421 0.3%
05 Polish 590 0.1%
06 Indonesian 462 0.1%
07 Russian 439 0.1%
08 French 231 0%
09 Other 430 0.1%

Top 25 companies using a .cz domain (out of 67,936)

by verified headcount

Company	Website	Founded	Employees	City/Location
Na Volné Noze	navolnenoze.cz	2005	10,001+	Ostrava
Česká Spořitelna	kariera.csas.cz	1825	5,001-10,000	Praha 4
Generali Česká Pojišťovna	generaliceska.cz	-	1,001-5,000	Praha
Česká Pošta	ceskaposta.cz	1993	1,001-5,000	Praha 1
O2 Czech Republic	o2.cz	2006	1,001-5,000	Praha
Kooperativa	koop.cz	-	1,001-5,000	Praha 8
Lidl Česká Republika	kariera.lidl.cz	-	1,001-5,000	Praha 5 – Stodůlky
Úřad Práce ČR	uradprace.cz	-	1,001-5,000	Dobrovského 25
UniCredit Bank CZ & SK	unicreditbank.cz	2007	1,001-5,000	Praha
Tesco Stores CR, A.s.	itesco.cz	-	1,001-5,000	Praha 10
T-Mobile Czech Republic A.s.	t-mobile.cz	-	1,001-5,000	Praha 4
Česká Televize	ceskatelevize.jobs.cz	1992	1,001-5,000	Praha 4
Seznam.cz	o.seznam.cz	1996	1,001-5,000	Praha
PAF	pifpaf.cz	2000	1,001-5,000	Olomouc
BILLA Česká Republika	billa.cz	1990	1,001-5,000	Říčany
Kaufland Česká Republika V.o.s.	kaufland.cz	1998	1,001-5,000	Praha 6
Albert Česká Republika	albert.cz	-	1,001-5,000	Praha
České Dráhy, A.s.	ceskedrahy.cz	-	1,001-5,000	Praha 1
CETIN	cetin.cz	2015	1,001-5,000	Prague
OVB Allfinanz A.s.	ovb.cz	1970	1,001-5,000	Praha 4
PENNY Česká Republika	penny.cz	-	1,001-5,000	Radonice
ORLEN Unipetrol	orlenunipetrol.cz	1994	1,001-5,000	Prague
Czech Radio	rozhlas.cz	1923	1,001-5,000	Praha 2
Metrostav A.s.	metrostav.cz	1971	1,001-5,000	Prague
Ministerstvo Vnitra	mv.gov.cz	1993	1,001-5,000	Praha

Companies using .cz domains by industry

top 12

01 information technology and services 3,610 19.6%
02 marketing and advertising 2,964 16.1%
03 Construction 1,733 9.4%
04 Retail 1,521 8.3%
05 management consulting 1,519 8.3%
06 Real Estate 1,329 7.2%
07 Wholesale 1,203 6.5%
08 Financial Services 1,158 6.3%
09 computer software 921 5%
10 Industrial Automation 831 4.5%
11 machinery 831 4.5%
12 sports 776 4.2%

Companies using .cz by employee count

50.07K companies

Most used technologies on .cz websites

by websites

#	Technology	Category	Websites
01	HTTP/3	Development Utilities	342,391
02	WordPress	Content Management	234,730
03	Wedos DNS	DNS Services	219,407
04	Google Tag Manager	Marketing & SEO	201,222
05	WEDOS Internet	Hosting & Infrastructure	177,628
06	HSTS	Security & Compliance	159,769
07	Nofollow Links	Website Features	159,600
08	Forpsi DNS	DNS Services	143,583
09	Websupport.sk DNS	DNS Services	129,873
10	Cloudflare	Hosting & Infrastructure	121,996
11	Bootstrap	Web Design Tools	118,547
12	Websupport DNS	DNS Services	118,301
13	WEDOS MX	MX & Email Hosting Services	109,747
14	OpenResty	Development Utilities	108,703
15	Webglobe	Hosting & Infrastructure	86,855