What technology does zssk.sk use?

zssk.sk is built with React, PHP, WordPress, jQuery.

Is zssk.sk secure (HTTPS)?

Yes. zssk.sk uses TLS 1.2 with a certificate issued by Let's Encrypt, valid until Sep 17, 2026.

zssk.sk is hosted on ZT-AS - ZSR - ZT Bratislava, SK.

What is zssk.sk's SEO score?

zssk.sk scored 85/100 for SEO in the latest analysis (great).

What is zssk.sk's overall website score?

zssk.sk has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.

zssk.sk

Národný dopravca

Last scanned Jul 27, 2026, 1:43 PM · 2 views

Overall score

Great

Summary

Cestujte vlakom na Slovensku aj do zahraničia so ZSSK. This website uses WordPress hosted on ZT-AS - ZSR - ZT Bratislava, SK. SEO is good (85/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (90/100). Top issue: No H1 heading found.

Cestujte vlakom na Slovensku aj do zahraničia so ZSSK. Kúpte si lístok a užite si pohodlnú cestu do vášho cieľa.

Hosted on ZT-AS - ZSR - ZT Bratislava, SK

Top issues to fix

7 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
3 cookies 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.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

SEO

2 issue(s) found

Performance

782 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

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

Cestujte vlakom na Slovensku aj do zahraničia so ZSSK. Kúpte si lístok a užite si pohodlnú cestu do vášho cieľa.

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Contact

Email, phone, and address published on this site's own pages.

Email: info@slovakrail.sk
Phone: 18188 +421244858188

Meta tags

Title: Národný dopravca
Description: Cestujte vlakom na Slovensku aj do zahraničia so ZSSK. Kúpte si lístok a užite si pohodlnú cestu do vášho cieľa.
Canonical: https://www.zssk.sk/
Language: sk
Charset: utf-8
Viewport: width=device-width, initial-scale=1
Robots meta: index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

Technologies

Detected frameworks, languages, and tools.

React PHP WordPress jQuery

Hosting & CDN

Hosting provider: ZT-AS - ZSR - ZT Bratislava, SK
CDN provider: —
IP address: 217.12.52.84
ASN: AS25496 (ZT-AS - ZSR - ZT Bratislava, SK)

DNS records

Type	Value
A	217.12.52.84
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.2
Issuer: Let's Encrypt
Subject: www.zssk.sk
Valid from: Jun 19, 2026
Valid to: Sep 17, 2026
Days until expiry: 52
SAN domains: autovlak.sk, cestovanievlakom.sk, idemevlakom.sk, idemevlakomnavylet.sk, konto.zssk.sk, listkynavlak.sk, predaj.zssk.sk, railsk.sk, railway.sk, slovakrail.sk, slovenskedrahy.sk, slovenskevlaky.sk, slusnevlakom.sk, vlakomnahokej.sk, vlakomnavylet.sk, vlakyslovensko.sk, wifizssk.sk, www.autovlak.sk, www.cestovanievlakom.sk, www.idemevlakomnavylet.sk, www.listkynavlak.sk, www.railsk.sk, www.railway.sk, www.slovakrail.sk, www.slovenskedrahy.sk, www.slovenskevlaky.sk, www.slusnevlakom.sk, www.vlakomnahokej.sk, www.vlakomnavylet.sk, www.vlakyslovensko.sk, www.wifizssk.sk, www.zeleznica.sk, www.zelezniciari.sk, www.zssk.sk, www.zsskthu.sk, zeleznica.sk, zelezniciari.sk, zssk.sk, zsskthu.sk

Security headers

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

Compression: gzip · 3 cookie(s) observed

Content & assets

Headings

H1 0 · H2 9 · H3 31

Links

89 internal · 13 external · 1 broken

Images

13 total · 0 missing alt

Scripts / Styles

73 scripts · 17 stylesheets

JS / CSS size

192 KB · 895 KB

Page size

192 KB

Robots.txt & Sitemap

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

SEO issues

No H1 heading found
sitemap.xml not found

Scan details

Requested URL: https://zssk.sk
Final URL: https://www.zssk.sk/
HTTP status: 200
HTTP version: HTTP/2
Response time: 779 ms
HTML size: 192 KB
Redirect chain: https://zssk.sk → https://www.zssk.sk/

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