Domain report
fastool.io
fastool.io ranks in the top 6.85% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 7 distinct hosts observed under it.
Connectivity
- Top percentile
- 6.85%
- 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
https://fastool.io/ answered with HTTP 200.
Certificate until 2026-12-15C=US, O=Google Trust Services, CN=WE1
DNS records
- A
- 172.67.167.15
- 104.21.65.208
- AAAA
- 2606:4700:3037::6815:41d0
- 2606:4700:3032::ac43:a70f
- MX
- 14 route2.mx.cloudflare.net.
- 33 route1.mx.cloudflare.net.
- 67 route3.mx.cloudflare.net.
- NS
- kayden.ns.cloudflare.com.
- lucy.ns.cloudflare.com.
- AS
- Server in network CLOUDFLARENET, AS13335 · United States172.67.167.0/24, which holds 172.67.167.15
Live preview
This site sends "X-Frame-Options: DENY", which blocks embedding it here.
Since fastool.io 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)
No RDAP (WHOIS) data is available for fastool.io.
SSL certificate
- Common name
- fastool.io
- Issuer
- C=US, O=Google Trust Services, CN=WE1
- Valid from
- 2026-09-16
- Valid until
- 2026-12-15
Matches fastool.io exactly. Source: Certificate Transparency logs (crt.sh).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=utf-8
- Cache-Control
- public, max-age=0, s-maxage=86400, stale-while-revalidate=604800
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- Not sent
- Strict-Transport-Security
- max-age=63072000
- X-Frame-Options
- DENY
- X-Content-Type-Options
- nosniff
- Referrer-Policy
- strict-origin-when-cross-origin
- Permissions-Policy
- camera=(), microphone=(), geolocation=()
Redirect chain
- 1.
http://fastool.io/HTTP 308→ https://fastool.io/
- 2.
https://fastool.io/HTTP 307→ https://www.fastool.io/
- 3.
https://www.fastool.io/HTTP 307→ https://www.fastool.io/en
- 4.
https://www.fastool.io/enHTTP 200
Meta tags
- Title
- Free Astronomy Calculators for Stargazing & Astrophotography
- Description
- Free in-browser astronomy tools for stargazing & astrophotography: sunrise, golden hour, moon phases, twilight, telescope FOV and sidereal time. No signup.
- Canonical
- https://www.fastool.io/en
- Robots
- Not set
- Generator
- Not set
- Open Graph title
- Free Astronomy Calculators for Stargazing & Astrophotography
- Open Graph description
- Free in-browser astronomy tools for stargazing & astrophotography: sunrise, golden hour, moon phases, twilight, telescope FOV and sidereal time. No signup.
- Open Graph image
- https://www.fastool.io/og/hub.png
- Open Graph type
- website
- Twitter card
- summary_large_image
- Twitter title
- Free Astronomy Calculators for Stargazing & Astrophotography
- Twitter image
- https://www.fastool.io/og/hub.png
robots.txt
- Disallow rules (User-agent: *)
- 2
- Disallow rules (other agents)
- 0
Sitemap declared:
https://www.fastool.io/sitemap.xml
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
- Next.jsframework
Found "_next/static/" in the page's HTML
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.