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Domain report

dbook.ai

dbook.ai ranks in the top 0.22% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.

Explore dbook.ai in the Web Graph

Connectivity

#292,927harmonic-centrality rank
Top percentile
0.22%
Hosts observed
4

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://dbook.ai/ answered with HTTP 200.

DNS records

A
  • 18.238.25.40
  • 18.238.25.53
  • 18.238.25.34
  • 18.238.25.111
AAAA
No records found.
MX
  • 1 aspmx.l.google.com.
  • 10 alt3.aspmx.l.google.com.
  • 10 alt4.aspmx.l.google.com.
  • 5 alt1.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
NS
  • ns-1162.awsdns-17.org.
  • ns-1831.awsdns-36.co.uk.
  • ns-249.awsdns-31.com.
  • ns-973.awsdns-57.net.

Live preview

This is a live, sandboxed embed of dbook.ai — 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
Cache-Control
public, max-age=2
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://dbook.ai/HTTP 301

    → https://dbook.ai/

  2. 2.https://dbook.ai/HTTP 200

Meta tags

Title
디북 – 스마트 학습을 더 스마트하게!
Description
초중고 내신 완벽 대비! 올인원 문제집 앱 디북 & 중학 수학 앱 디북피플
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
디북 – 스마트 학습을 더 스마트하게!
Open Graph description
올인원 문제집 앱 디북 & 중학 수학 앱 디북피플
Open Graph image
https://www.dbook.ai/og.png
Open Graph type
website
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

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

No Sitemap declared in robots.txt.

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Google Tag Manageranalytics

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

Related domains

Similar connectivity

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