Domain report
optical.org
optical.org ranks in the top 0.35% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 9 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.35%
- 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
https://optical.org/ answered with HTTP 200.
DNS records
- A
- 104.26.12.25
- 104.26.13.25
- 172.67.75.68
- AAAA
- 2606:4700:20::681a:c19
- 2606:4700:20::681a:d19
- 2606:4700:20::ac43:4b44
- MX
- 0 optical-org.mail.protection.outlook.com.
- NS
- vern.ns.cloudflare.com.
- mckenzie.ns.cloudflare.com.
Live preview
This site sends "X-Frame-Options: DENY", which blocks embedding it here.
Since optical.org 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).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html;charset=UTF-8
- Cache-Control
- no-store
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- Not sent
- Strict-Transport-Security
- max-age=15552000; preload
- X-Frame-Options
- DENY
- X-Content-Type-Options
- nosniff
- Referrer-Policy
- strict-origin-when-cross-origin
- Permissions-Policy
- Not sent
Redirect chain
- 1.
http://optical.org/HTTP 301→ https://optical.org/
- 2.
https://optical.org/HTTP 200
Meta tags
- Title
- Homepage
- Description
- Not set
- Canonical
- Not set
- Robots
- index,follow
- Generator
- Not set
- Open Graph title
- Homepage
- Open Graph description
- Not set
- Open Graph image
- Not set
- Open Graph type
- website
- Twitter card
- summary_large_image
- Twitter title
- Not set
- Twitter image
- Not set
robots.txt
optical.org has no robots.txt.
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
- Google Tag Manageranalytics
Found "googletagmanager.com/gtm.js" in the page's HTML
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.