What technology does tele3.cz use?

tele3.cz is built with PHP, jQuery, Nginx.

Is tele3.cz secure (HTTPS)?

Yes. tele3.cz uses TLS 1.2 with a certificate issued by ZeroSSL GmbH, valid until Sep 3, 2026.

Hosting provider information for tele3.cz is not available yet.

What is tele3.cz's SEO score?

tele3.cz scored 70/100 for SEO in the latest analysis (fair).

What is tele3.cz's overall website score?

tele3.cz has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.

Has tele3.cz's score changed over time?

tele3.cz's overall score has declined by 3 points (from 90 to 87) since Jul 26, 2026.

tele3.cz

TELE3 | registrace domén | webhosting | virtuální servery

Last scanned Aug 2, 2026, 6:00 AM · 12 views

Overall score

Great

Summary

Komplexní internetová řešení od TELE3 - registrace domén, webhosting, serverhosting, VPS, virtuální servery, správa serveru, SSL certifikáty, VoIP. This website uses Nginx. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.

Komplexní internetová řešení od TELE3 - registrace domén, webhosting, serverhosting, VPS, virtuální servery, správa serveru, SSL certifikáty, VoIP

Top issues to fix

9 issues found · 1 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
1 cookie without Secure/HttpOnly flags
Security
Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.

+3 more issues — details in the sections below.

SEO

5 issue(s) found

100

Performance

262 ms

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-3 overall since Jul 26, 2026

Overall: 87
SEO: 70
Security: 85
Performance: 100
Accessibility: 100

Organization

Company details published in this site's own structured data.

Komplexní internetová řešení od TELE3 - registrace domén, webhosting, serverhosting, VPS, virtuální servery, správa serveru, SSL certifikáty, VoIP

YouTube LinkedIn X (Twitter)

Meta tags

Title: TELE3 | registrace domén | webhosting | virtuální servery
Description: Komplexní internetová řešení od TELE3 - registrace domén, webhosting, serverhosting, VPS, virtuální servery, správa serveru, SSL certifikáty, VoIP
Canonical
Language: cs
Charset: UTF-8
Viewport: width=device-width, initial-scale=1
Robots meta: index,follow
Manifest

Technologies

Detected frameworks, languages, and tools.

PHP jQuery Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.2
Issuer: ZeroSSL GmbH
Subject: tele3.cz
Valid from: Jun 5, 2026
Valid to: Sep 3, 2026
Days until expiry: 32
SAN domains: tele3.cz, *.tele3.cz

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 10 · H3 0

Links

45 internal · 4 external · 20 broken

Images

24 total · 0 missing alt

Scripts / Styles

11 scripts · 6 stylesheets

JS / CSS size

58 B · 0 B

Page size

13.9 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Missing canonical link
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://tele3.cz
Final URL: https://www.tele3.cz/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 262 ms
HTML size: 13.9 KB
Redirect chain: https://tele3.cz → https://www.tele3.cz/

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Frequently asked questions

What technology does tele3.cz use?: tele3.cz is built with PHP, jQuery, Nginx.
Is tele3.cz secure (HTTPS)?: Yes. tele3.cz uses TLS 1.2 with a certificate issued by ZeroSSL GmbH, valid until Sep 3, 2026.
Who hosts tele3.cz?: Hosting provider information for tele3.cz is not available yet.
What is tele3.cz's SEO score?: tele3.cz scored 70/100 for SEO in the latest analysis (fair).
What is tele3.cz's overall website score?: tele3.cz has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
Has tele3.cz's score changed over time?: tele3.cz's overall score has declined by 3 points (from 90 to 87) since Jul 26, 2026.