instructor.cz website report

Česká jednička na online školení BOZP a PO | INSTRUCTOR

Česká jednička pro online školení BOZP a PO. Platforma INSTRUCTOR se kompletně postará o vstupní i pravidelná školení vašich zaměstnanců.

Instructor was registered 23 years 8 months ago, is ranked #2,327,796 worldwide (top 71%), has an estimated value of $994. It may earn around $77 per month from advertising.

Czech

Visit website Update data Similar sites

Last updated 1 week ago

Estimated worth

$994

Automated valuation

Global rank

#2,327,796

Improving

Monthly visitors

802

40K page views

Domain age

23 years 8 months

Since Feb 14, 2003

Hosted in

Czech Republic

Master Internet s.r.o

Security headers

88/100

Response 0.11 s

Key facts about instructor.cz

Domain: instructor.cz
Website name: Česká jednička na online školení BOZP a PO | INSTRUCTOR
Estimated worth: $994
Global rank: #2,327,796 (top 71% of 3.3M ranked sites)
Monthly visitors (est.): 802 · 40K page views
Registered: February 14, 2003 (23 years 8 months ago)
Expires: February 14, 2027
Registrar: REG-WEBGLOBE
Server location: Brno, Czech Republic
Network: Master Internet s.r.o AS24971
Email provider: Self-hosted / other (mx1.fortion.net)
Language: Czech
Data updated: October 13, 2026

Estimated traffic & revenue

	Page views	Visitors	Ad revenue
Daily	1,336	27	$3
Monthly	40,093	802	$77
Yearly	481,116	9,624	$924

Modelled from the global rank — not measured analytics. Use them to compare sites, not as exact figures.

Global rank history

Monthly values

Month	Global rank
2026-06	#35,939,847
2026-07	#30,468,774
2026-08	#11,097,480
2026-10	#2,327,796

Source: Rankeez (Tranco, Majestic, DomCop, Cisco Umbrella).

How we estimate instructor.cz's value

$994

The estimate is the higher of two independent approaches, both computed automatically from public data.

Traffic value: $838Driven by the global rank #2,327,796 (≈40K page views / month) plus a capped age bonus.
Activity value: $994Domain age plus observable signs of an active, professionally run website.

Activity signals found

Domain age (23 years 8 months)	$380
Active website with metadata	+$150
Substantial homepage content	+$150
Email authentication (SPF)	+$50
Security headers (88/100)	+$264

Revenue, sales or private analytics are not public and are not included. This is not an appraisal or a sale price.

On-page SEO

Title	Česká jednička na online školení BOZP a PO \| INSTRUCTOR 55 chars
Meta description	Česká jednička pro online školení BOZP a PO. Platforma INSTRUCTOR se kompletně postará o vstupní i pravidelná školení vašich zaměstnanců. 137 chars
Meta keywords	školení bozp, bozp, bozp a po, instructor, školení zaměstnanců, požární ochrana, školení požární ochrany, školení zaměstnanců, vzdělávání zaměstnanců, vzdělávací platforma, školení online
Language	Czech
Response time	0.11 s Fast

Homepage structure

H1 headings1

H2 headings7

H3 headings3

H4 headings0

Paragraphs193

Links64

Images28

Bold text13

Exactly one H1 heading — good practice.

Technology & infrastructure

CDN / proxy	None detected
Web server	nginx/1.14.1
Platform / language	Next.js
DNS provider	Unknown
Email provider	Self-hosted / other (mx1.fortion.net)
SPF record	`v=spf1 ip4:217.11.236.98/32 include:spf.nethost.cz include:_spf.fortion.net -all`
IPv6 (AAAA)	No
CAA record	No

Services verified in DNS

Google Search Console

Detected from TXT verification and SPF records published by the domain owner.

Domain name

Extension	.cz — the country-code extension of Czech Republic
Name length	10 characters Medium
Hyphens / digits	No hyphen · no digits

Security headers

6 passed · 2 to improve · 0 missing
Collected with an older method; a fresh check is running and will appear on your next visit.

HTTPSThe homepage is served over an encrypted HTTPS connection.
Strict-Transport-Security (HSTS)max-age 365 days, includeSubDomains, preload.
Content-Security-PolicyPresent but allows 'unsafe-inline' and 'unsafe-eval', which weakens XSS protection.
Clickjacking protectionCSP frame-ancestors prevents the site from being framed by others.
X-Content-Type-Optionsnosniff: browsers will not guess content types.
Referrer-Policyno-referrer-when-downgrade
Permissions-PolicyRestricts powerful browser features (camera, microphone, geolocation…).
Software version disclosureReveals Server: nginx/1.14.1, X-Powered-By: Next.js, which helps attackers target known vulnerabilities.

Raw HTTP response headers

HTTP/2 200 
server: nginx/1.14.1
date: Tue, 13 Oct 2026 03:30:23 GMT
content-type: text/html; charset=utf-8
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
content-security-policy: default-src https: blob: data: 'unsafe-inline' 'unsafe-eval' http://localhost:3000 ws://localhost:3000  http://localhost:1337 ws://localhost:1337 https://*.hotjar.com https://*.hotjar.io wss://*.hotjar.com wss://*.intercom.io http://t.contentsquare.net/uxa/smb/tag.js; frame-ancestors 'self' https://webadmin.instructor.cz https://admin.firemnikurzy.cz https://admin.eskoleni.cz https://webadmin.edunio.com https://admin.medbook.cz https://admin-instructor.beneficiotest.cz https://admin-edunio.beneficiotest.cz https://admin-kurzy.beneficiotest.cz https://admin-eskoleni.beneficiotest.cz https://admin-medbook.beneficiotest.cz;
referrer-policy: no-referrer-when-downgrade
permissions-policy: geolocation=self, notifications=self, push=self, sync-xhr=self, speaker=self, vibrate=self, fullscreen=self
strict-transport-security: max-age=31536000; includeSubDomains; preload
vary: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch, Accept-Encoding
link: </_next/static/media/5c8bbc89ca099f34-s.p.2qijkc4_gtkq0.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/83afe278b6a6bb3c-s.p.2bn3s6zvc0dyp.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2"
x-nextjs-stale-time: 86400
x-nextjs-prerender: 1
x-nextjs-postponed: 1
x-powered-by: Next.js
cache-control: private, no-cache, no-store, max-age=0, must-revalidate

Hosting

IP address	`149.62.148.12`
Location	Brno, Czech Republic
Network (ISP)	Master Internet s.r.o.
Autonomous system	AS24971 Master Internet s.r.o
Server software	nginx/1.14.1

Nameservers

Host	IP	Country
ns2.ignum.cz	`217.31.48.201`	Czech Republic
ns1.ignum.com	`185.65.223.35`	Slovakia

Domain registration (WHOIS)

Registrar	REG-WEBGLOBE
Created	February 14, 2003 23 years 8 months ago
Updated	December 26, 2022
Expires	February 14, 2027 in 113 days

Raw WHOIS record

%  (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: Tue Oct 13 05:30:22 2026

domain:       instructor.cz
registrant:   SB:MH1888-RIPE_XX
admin-c:      MH1888-RIPE
admin-c:      SB:MH1888-RIPE_XX
nsset:        NSSID:IGNUM
keyset:       WEBG-K-D0000589306-CZ
registrar:    REG-WEBGLOBE
registered:   14.02.2003 09:11:00
changed:      26.12.2022 21:36:20
expire:       14.02.2027

contact:      SB:MH1888-RIPE_XX
org:          Prevent s.r.o.
name:         PREVENT s.r.o.
address:      Březiněveská 3
address:      Praha 8
address:      18200
address:      CZ
registrar:    REG-WEBGLOBE
created:      10.08.2001 22:13:00
changed:      26.09.2024 11:51:30

contact:      MH1888-RIPE
name:         Miroslav Hes
address:      CZ
registrar:    REG-MEDIA4WEB
created:      10.08.2001 22:13:00
changed:      12.06.2026 11:50:10

nsset:        NSSID:IGNUM
nserver:      ns2.ignum.cz 
nserver:      ns1.ignum.com 
tech-c:       IGNUM-DOMENY
registrar:    REG-WEBGLOBE
created:      20.09.2006 09:55:39
changed:      11.12.2024 15:32:16

contact:      IGNUM-DOMENY
org:          IGNUM, s. r. o.
name:         Giacomo Tognoni
address:      Vinohradská 190
address:      Praha 3
address:      130 61
address:      CZ
e-mail:       [email protected]
registrar:    REG-WEBGLOBE
created:      13.12.2012 10:40:09
changed:      17.09.2026 13:53:04

keyset:       WEBG-K-D0000589306-CZ
dnskey:       257 3 13 zH/oATfbcbWnqk2slTLXW2UQms5+OBxKCL0bJqJB+ITHRRZ5RDtNnI01qLb0QHd2eCmLflNmWci10XBDbhBmdw==
tech-c:       IGNUM
registrar:    REG-WEBGLOBE
created:      26.12.2022 21:36:19
changed:      22.09.2025 23:46:22

contact:      IGNUM
org:          Webglobe, s.r.o.
name:         Giacomo Tognoni
address:      Pobřežní 620/3
address:      Praha
address:      18600
address:      CZ
registrar:    REG-WEBGLOBE
created:      17.03.2008 14:43:09
changed:      03.12.2024 14:04:22

DNS records

Type	Host	Value	TTL
A	instructor.cz	ip: 149.62.148.12	3598
NS	instructor.cz	target: ns1.ignum.com	3598
NS	instructor.cz	target: ns2.ignum.cz	3598
SOA	instructor.cz	mname: ns1.ignum.com rname: hostmaster.ignum.cz serial: 2026100501 refresh: 10800 retry: 3600 expire: 604800 minimum-ttl: 3600	3600
MX	instructor.cz	pri: 10 target: mx1.fortion.net	3600
MX	instructor.cz	pri: 5 target: mx0.fortion.net	3600
MX	instructor.cz	pri: 20 target: mx2.fortion.net	3600
TXT	instructor.cz	txt: v=spf1 ip4:217.11.236.98/32 include:spf.nethost.cz include:_spf.fortion.net -all	3600
TXT	instructor.cz	txt: v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1	3600
TXT	instructor.cz	txt: google-site-verification=RtlPen05mKshhhaQGcDiBWpjBtzDUi-ELO6J27h7npw	3600

Websites ranked near instructor.cz

#2,327,766 tsdo.jp $798
#2,327,770 coolpool.co.il $858
#2,327,781 erictb.info $513
#2,327,793 fermodiocesi.it $738
#2,327,796 instructor.cz $994
#2,327,801 techiezer.com $573
#2,327,807 phppointofsale.com $813
#2,327,808 helmut-zenz.de $513
#2,327,830 portlandcommunications.com $828

Questions about instructor.cz

When was instructor.cz registered?

Instructor.cz was registered on February 14, 2003, making it 23 years 8 months old.

Who is the domain registrar for instructor.cz?

Instructor.cz is registered through REG-WEBGLOBE.

Where is instructor.cz hosted?

Instructor.cz's server (IP 149.62.148.12) is located in Brno, Czech Republic.

How much is instructor.cz worth?

We estimate instructor.cz is worth $994. This is an automated estimate based on the site's global traffic rank, domain age and observable activity signals (professional email, business services, security, CDN) — not a professional appraisal or a real sale price.

How much traffic does instructor.cz get?

Based on its rank, instructor.cz receives roughly 802 unique visitors and 40K page views per month. These figures are modelled from the rank, not measured.

What is instructor.cz's global rank?

Instructor.cz has an estimated global rank of 2,327,796, sourced from Rankeez.com, which aggregates the Tranco, Majestic, DomCop and Cisco Umbrella rankings. Its rank has improved over the tracked period. This is an independent estimate, not affiliated with Amazon Alexa, which discontinued its own ranking service in 2022.

Who hosts instructor.cz?

Instructor.cz resolves to 149.62.148.12, on the network of Master Internet s.r.o (AS24971).

What email provider does instructor.cz use?

According to its MX records, instructor.cz receives email with Self-hosted / other (mx1.fortion.net). It publishes an SPF record to authenticate its outgoing mail.

When does instructor.cz expire?

The domain registration of instructor.cz is valid until February 14, 2027 (in 113 days), at REG-WEBGLOBE. Owners usually renew before that date.

Own instructor.cz? Add the badge

<a href="https://statmemory.com/instructor.cz"><img src="https://statmemory.com/badge/instructor.cz.svg" alt="instructor.cz on StatMemory" height="20"></a>

Shows your live global rank. To cite this report: “StatMemory, instructor.cz website report, https://statmemory.com/instructor.cz”.

StatMemory is not affiliated with instructor.cz. This report shows publicly available data (DNS, WHOIS, HTTP headers, public top-site lists) and automated estimates for information purposes.