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techlib.cz

techlib.cz ranks in the top 0.030% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 86 distinct hosts observed under it.

Explore techlib.cz in the Web Graph

Connectivity

#39,428harmonic-centrality rank
Top percentile
0.030%
Hosts observed
86

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://techlib.cz/ answered with HTTP 200.

DNS records

A
  • 195.113.242.34
AAAA
No records found.
MX
  • 10 mta.techlib.cz.
NS
  • ns.techlib.cz.

Live preview

This is a live, sandboxed embed of techlib.cz — not a copy. What it shows can change any time the site itself does.

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=UTF-8
Cache-Control
no-store, no-cache, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
Not sent
X-Frame-Options
Not sent
X-Content-Type-Options
Not sent
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://techlib.cz/HTTP 301

    → https://techlib.cz/

  2. 2.https://techlib.cz/HTTP 301

    → https://www.techlib.cz/

  3. 3.https://www.techlib.cz/HTTP 302

    → https://www.techlib.cz/en/

  4. 4.https://www.techlib.cz/en/HTTP 200

Meta tags

Title
Czech National Library of Technology
Description
Národní technická knihovna
Canonical
Not set
Robots
noindex, nofollow
Generator
Not set
Open Graph title
English
Open Graph description
Not set
Open Graph image
https://www.techlib.cz/public/images/logos/logo-ntk4-square.jpg
Open Graph type
non_profit
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

techlib.cz has no robots.txt.

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

  • PHPother

    X-Powered-By: PHP/8.2.33

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