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Domain report

html5rocks.com

html5rocks.com ranks in the top 0.0018% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 7 distinct hosts observed under it.

Explore html5rocks.com in the Web Graph

Connectivity

#2,402harmonic-centrality rank
Top percentile
0.0018%
Hosts observed
7

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://html5rocks.com/ answered with HTTP 200.

DNS records

A
  • 172.217.77.121
AAAA
  • 2607:f8b0:4023:140d::79
MX
No records found.
NS
  • ns2.google.com.
  • ns4.google.com.
  • ns1.google.com.
  • ns3.google.com.

Live preview

Screenshot of html5rocks.com

This site's Content-Security-Policy restricts embedding to specific origins ("frame-ancestors 'self' https://developers.google.com/_d/analytics-iframe"), which does not include StatsMyWeb.

Since html5rocks.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
no-cache, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-kzq1KkPg2nVtEvx7AIGNNRCw/KsZvn' 'unsafe-eval'; frame-ancestors 'self' https://developers.google.com/_d/analytics-iframe; report-uri https://csp.withgoogle.com/csp/devsite/v2
Strict-Transport-Security
max-age=63072000; includeSubdomains; preload
X-Frame-Options
Not sent
X-Content-Type-Options
nosniff
Referrer-Policy
Not sent
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://html5rocks.com/HTTP 301

    → https://html5rocks.com/

  2. 2.https://html5rocks.com/HTTP 302

    → https://web.dev/

  3. 3.https://web.dev/HTTP 200

Meta tags

Title
web.dev
Description
Guidance to build modern web experiences that work on any browser.
Canonical
https://web.dev/
Robots
Not set
Generator
Not set
Open Graph title
web.dev
Open Graph description
Guidance to build modern web experiences that work on any browser.
Open Graph image
https://web.dev/images/social-wide.jpg
Open Graph type
website
Twitter card
summary
Twitter title
Not set
Twitter image
https://web.dev/static/images/social-wide.jpg

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 Analyticsanalytics

    Found "www.google-analytics.com" in the page's HTML

Related domains

Similar connectivity

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