Domain report
op3.dev
op3.dev ranks in the top 0.29% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 4 distinct hosts observed under it.
Connectivity
#390,127harmonic-centrality rank
- Top percentile
- 0.29%
- 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://op3.dev/ answered with HTTP 200.
DNS records
- A
- 104.26.7.19
- 104.26.6.19
- 172.67.74.218
- AAAA
- 2606:4700:20::681a:713
- 2606:4700:20::ac43:4ada
- 2606:4700:20::681a:613
- 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
- ganz.ns.cloudflare.com.
- mckinley.ns.cloudflare.com.
Live preview
This is a live, sandboxed embed of op3.dev — not a copy. What it shows can change any time the site itself does.
Domain registration (WHOIS / RDAP)
RDAP lookup failed (HTTP 429).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=utf-8
- Cache-Control
- Not sent
- 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
Redirect chain
- 1.
http://op3.dev/HTTP 308→ https://op3.dev/
- 2.
https://op3.dev/HTTP 200
Meta tags
- Title
- OP3: The Open Podcast Prefix Project
- Description
- Not set
- Canonical
- https://op3.dev/
- Robots
- Not set
- Generator
- Not set
- Open Graph title
- Not set
- Open Graph description
- Not set
- Open Graph image
- Not set
- Open Graph type
- Not set
- Twitter card
- Not set
- Twitter title
- Not set
- Twitter image
- Not set
robots.txt
- Disallow rules (User-agent: *)
- 2
- Disallow rules (other agents)
- 0
Sitemap declared:
https://op3.dev/sitemap.xml
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
- Cloudflare Web Analyticsanalytics
Found "static.cloudflareinsights.com" in the page's HTML
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.