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Domain report

vision.app

vision.app ranks in the top 0.22% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 3 distinct hosts observed under it.

Explore vision.app in the Web Graph

Connectivity

#293,911harmonic-centrality rank
Top percentile
0.22%
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

200HTTP status

https://vision.app/ answered with HTTP 200.

DNS records

A
  • 104.20.41.96
  • 172.66.166.176
AAAA
  • 2606:4700:10::6814:2960
  • 2606:4700:10::ac42:a6b0
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
  • nicole.ns.cloudflare.com.
  • theo.ns.cloudflare.com.

Live preview

This is a live, sandboxed embed of vision.app — not a copy. What it shows can change any time the site itself does.

Domain registration (WHOIS / RDAP)

Registrar
GoDaddy.com, LLC
Registered
2019-08-13
Expires
2027-08-13
Last changed
2026-09-27

Nameservers: nicole.ns.cloudflare.com, theo.ns.cloudflare.com

Status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited

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
Cache-Control
no-cache, must-revalidate
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=63072000
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://vision.app/HTTP 301

    → https://vision.app/

  2. 2.https://vision.app/HTTP 200

Meta tags

Title
Vision.app™
Description
vision.app is an interdisciplinary team of clinical optometrists, vision scientists and software engineers. Digital vision testing from your phone, myopia protection for children and optics consulting & R&D, backed by publications and patents.
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
Vision.app™
Open Graph description
vision.app is an interdisciplinary team of clinical optometrists, vision scientists and software engineers. Digital vision testing from your phone, myopia protection for children and optics consulting & R&D, backed by publications and patents.
Open Graph image
https://vision.app/vision_app_assets/root/visionapp_favicon.png
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Vision.app™
Twitter image
https://vision.app/vision_app_assets/root/visionapp_favicon.png

robots.txt

Disallow rules (User-agent: *)
2
Disallow rules (other agents)
0

Sitemap declared:

  • https://vision.app/sitemap.xml

Technology detected

Best-effort, based on a small set of well-known signals — this may be incomplete.

  • Cloudflarecdn

    Server: cloudflare

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