Domain report
optmstr.com
optmstr.com ranks in the top 0.023% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 3 distinct hosts observed under it.
Connectivity
#30,332harmonic-centrality rank
- Top percentile
- 0.023%
- Hosts observed
- 3
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
501HTTP status
https://optmstr.com/ answered with HTTP 501.
DNS records
- A
- 104.18.19.218
- 104.18.18.218
- AAAA
- 2606:4700::6812:13da
- 2606:4700::6812:12da
- MX
- No records found.
- NS
- albert.ns.cloudflare.com.
- tori.ns.cloudflare.com.
Live preview
This is a live, sandboxed embed of optmstr.com — 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://optmstr.com/HTTP 301→ https://optmstr.com/
- 2.
https://optmstr.com/HTTP 501
Meta tags
- Title
- Something went wrong! - OptinMonster App
- Description
- Not set
- Canonical
- Not set
- 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
robots.txt request failed (HTTP 501).
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.