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Domain report

fibu.dev

fibu.dev ranks in the top 0.10% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 1 distinct host observed under it.

Explore fibu.dev in the Web Graph

Connectivity

#139,519harmonic-centrality rank
Top percentile
0.10%
Hosts observed
1

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://fibu.dev/ answered with HTTP 200.

DNS records

A
  • 104.21.22.51
  • 172.67.202.242
AAAA
  • 2606:4700:3034::6815:1633
  • 2606:4700:3033::ac43:caf2
MX
  • 24 route3.mx.cloudflare.net.
  • 7 route1.mx.cloudflare.net.
  • 76 route2.mx.cloudflare.net.
NS
  • art.ns.cloudflare.com.
  • sofia.ns.cloudflare.com.

Live preview

This is a live, sandboxed embed of fibu.dev — 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
public, max-age=0
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://fibu.dev/HTTP 308

    → https://fibu.dev/

  2. 2.https://fibu.dev/HTTP 200

Meta tags

Title
Fibu — Learn to Code, 15 Minutes at a Time
Description
Fibu turns coding into a daily habit you actually keep: 10–15 minute missions in Python, JavaScript and web development, with streaks, XP and 2.64M+ learners. Free to start on iOS and Android.
Canonical
https://fibu.dev/
Robots
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Generator
Astro v7.2.0
Open Graph title
Fibu — Learn to Code, 15 Minutes at a Time
Open Graph description
Fibu turns coding into a daily habit you actually keep: 10–15 minute missions in Python, JavaScript and web development, with streaks, XP and 2.64M+ learners. Free to start on iOS and Android.
Open Graph image
https://fibu.dev/og-image.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Fibu — Learn to Code, 15 Minutes at a Time
Twitter image
https://fibu.dev/og-image.png

robots.txt

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

Sitemap declared:

  • https://fibu.dev/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.