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Domain report

raphkoster.com

raphkoster.com ranks in the top 0.34% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore raphkoster.com in the Web Graph

Connectivity

#448,625harmonic-centrality rank
Top percentile
0.34%
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://raphkoster.com/ answered with HTTP 200.

DNS records

A
  • 104.21.62.98
  • 172.67.222.208
AAAA
  • 2606:4700:3037::ac43:ded0
  • 2606:4700:3035::6815:3e62
MX
  • 0 mail.raphkoster.com.
NS
  • betty.ns.cloudflare.com.
  • frank.ns.cloudflare.com.

Live preview

This is a live, sandboxed embed of raphkoster.com — 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
no-cache
Content-Encoding
Not sent

Security

Content-Security-Policy
upgrade-insecure-requests
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://raphkoster.com/HTTP 301

    → https://raphkoster.com/

  2. 2.https://raphkoster.com/HTTP 301

    → https://www.raphkoster.com/

  3. 3.https://www.raphkoster.com/HTTP 200

Meta tags

Title
Raph Koster – Game designer, author, speaker
Description
Not set
Canonical
Not set
Robots
max-image-preview:large
Generator
Not set
Open Graph title
Raph Koster
Open Graph description
Game designer, author, speaker
Open Graph image
https://i0.wp.com/www.raphkoster.com/wp-content/uploads/2025/10/biglogo-transparency.png?fit=512%2C512&ssl=1
Open Graph type
website
Twitter card
Not set
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
6
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

  • WordPresscms

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

Related domains

Similar connectivity

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