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Domain report

leanpub.com

leanpub.com ranks in the top 0.0046% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 9 distinct hosts observed under it.

Explore leanpub.com in the Web Graph

Connectivity

#6,141harmonic-centrality rank
Top percentile
0.0046%
Hosts observed
9

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://leanpub.com/ answered with HTTP 200.

DNS records

A
  • 3.170.51.51
  • 3.170.51.92
  • 3.170.51.93
  • 3.170.51.66
AAAA
  • 2600:9000:2873:de00:6:744:8980:93a1
  • 2600:9000:2873:f800:6:744:8980:93a1
  • 2600:9000:2873:7c00:6:744:8980:93a1
  • 2600:9000:2873:ea00:6:744:8980:93a1
  • 2600:9000:2873:5000:6:744:8980:93a1
  • 2600:9000:2873:f200:6:744:8980:93a1
  • 2600:9000:2873:2800:6:744:8980:93a1
  • 2600:9000:2873:5a00:6:744:8980:93a1
MX
  • 0 aspmx.l.google.com.
NS
  • ns-1390.awsdns-45.org.
  • ns-1693.awsdns-19.co.uk.
  • ns-389.awsdns-48.com.
  • ns-576.awsdns-08.net.

Live preview

Screenshot of leanpub.com

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since leanpub.com can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.

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
max-age=300, stale-while-revalidate=1800
Content-Encoding
Not sent

Security

Content-Security-Policy
default-src 'self'; img-src 'self' data: blob: https: https://leanpub.com; object-src 'self' blob: https://leanpub.com; script-src 'self' 'unsafe-inline' 'unsafe-eval' https: https://leanpub.com https://www.google.com/recaptcha/ https://www.gstatic.com/recaptcha/; style-src 'self' 'unsafe-inline' https: https://leanpub.com; connect-src 'self' https: https://leanpub.com https://www.google.com/recaptcha/; font-src 'self' data: https: https://leanpub.com; frame-src 'self' https: https://leanpub.com https://www.youtube.com https://www.youtube-nocookie.com https://player.vimeo.com https://www.google.com https://www.gstatic.com https://recaptcha.google.com/recaptcha/ https://www.paypal.com; media-src 'self' blob: https: https://leanpub.com s3.us-east-1.amazonaws.com; worker-src 'self' blob:; frame-ancestors 'self'; upgrade-insecure-requests
Strict-Transport-Security
max-age=31536000; includeSubDomains; preload
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
strict-origin-when-cross-origin
Permissions-Policy
geolocation=(), microphone=(), camera=()

What each security header does

Redirect chain

  1. 1.http://leanpub.com/HTTP 301

    → https://leanpub.com/

  2. 2.https://leanpub.com/HTTP 200

Meta tags

Title
Leanpub: Publish Early. Publish Often.
Description
Read ebooks and take online courses while the author is still writing them — and get every update free. Or write, publish, and sell your own in-progress book or course on Leanpub.
Canonical
https://leanpub.com/
Robots
Not set
Generator
Not set
Open Graph title
Leanpub: Publish Early. Publish Often.
Open Graph description
Read ebooks and take online courses while the author is still writing them — and get every update free. Or write, publish, and sell your own in-progress book or course on Leanpub.
Open Graph image
https://leanpub.com/images/og/leanpub-share-card.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Leanpub: Publish Early. Publish Often.
Twitter image
https://leanpub.com/images/og/leanpub-share-card.jpg

robots.txt

Disallow rules (User-agent: *)
9
Disallow rules (other agents)
1

Sitemaps declared:

  • https://leanpub.com/sitemap.xml
  • https://leanpub.com/blog/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • 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.