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Domain report

openbook.gr

openbook.gr ranks in the top 0.36% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore openbook.gr in the Web Graph

Connectivity

#480,612harmonic-centrality rank
Top percentile
0.36%
Hosts observed
2

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://openbook.gr/ answered with HTTP 200.

DNS records

A
  • 5.9.148.215
AAAA
No records found.
MX
  • 10 mail.openbook.gr.
NS
  • ns51.cretaforce.gr.
  • ns52.cretaforce.gr.

Live preview

This is a live, sandboxed embed of openbook.gr — 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
Not sent
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://openbook.gr/HTTP 301

    → http://www.openbook.gr/

  2. 2.http://www.openbook.gr/HTTP 301

    → https://www.openbook.gr/

  3. 3.https://www.openbook.gr/HTTP 200

Meta tags

Title
Κεντρική σελίδα - Ανοικτή Βιβλιοθήκη
Description
Not set
Canonical
https://www.openbook.gr/
Robots
max-image-preview:large
Generator
All in One SEO (AIOSEO) 5.0.3
Open Graph title
Κεντρική σελίδα - Ανοικτή Βιβλιοθήκη
Open Graph description
Not set
Open Graph image
Not set
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Κεντρική σελίδα - Ανοικτή Βιβλιοθήκη
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
1
Disallow rules (other agents)
0

Sitemaps declared:

  • https://www.openbook.gr/sitemap.xml
  • https://www.openbook.gr/sitemap.rss

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • WordPresscms

    Found "wp-content/" in the page's HTML

  • Google Analyticsanalytics

    Found "googletagmanager.com/gtag/js" in the page's HTML

Related domains

Similar connectivity

Domains ranked just above and below it in the same snapshot.