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Domain report

optalert.com

optalert.com ranks in the top 0.43% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 2 distinct hosts observed under it.

Explore optalert.com in the Web Graph

Connectivity

#574,618harmonic-centrality rank
Top percentile
0.43%
Hosts observed
2

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://optalert.com/ answered with HTTP 200.

DNS records

A
  • 104.17.145.110
  • 104.17.144.110
AAAA
  • 2606:4700::6811:906e
  • 2606:4700::6811:916e
MX
  • 10 filter1.optale-1.mailguard.com.au.
  • 20 filter2.optale-1.mailguard.com.au.
  • 30 filter3.optale-1.mailguard.com.au.
NS
  • kanye.ns.cloudflare.com.
  • nina.ns.cloudflare.com.

Live preview

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

Domain registration (WHOIS / RDAP)

RDAP lookup failed (HTTP 429).

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; charset=UTF-8
Cache-Control
public, max-age=0, s-maxage=2592000
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

What each security header does

Redirect chain

  1. 1.http://optalert.com/HTTP 301

    → https://optalert.com/

  2. 2.https://optalert.com/HTTP 301

    → https://www.optalert.com/

  3. 3.https://www.optalert.com/HTTP 200

Meta tags

Title
Optalert - Drowsiness, OSA and Neurology Screening
Description
Innovation powerhouse leading drowsiness measurement for over 20 years. Discovered first method of OSA screening while subject is awake.
Canonical
https://www.optalert.com/
Robots
index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1
Generator
Elementor 4.3.5; features: e_font_icon_svg, additional_custom_breakpoints; settings: css_print_method-internal, google_font-enabled, font_display-auto
Open Graph title
Optalert - Drowsiness, OSA and Neurology Screening
Open Graph description
Innovation powerhouse leading drowsiness measurement for over 20 years. Discovered first method of OSA screening while subject is awake.
Open Graph image
https://www.optalert.com/wp-content/uploads/2022/11/h42G0btDE5dqKuxWC9xi-scaled.jpg
Open Graph type
website
Twitter card
summary
Twitter title
Optalert - Drowsiness, OSA and Neurology Screening
Twitter image
https://www.optalert.com/wp-content/uploads/2022/11/h42G0btDE5dqKuxWC9xi-scaled.jpg

robots.txt

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

Sitemap declared:

  • https://www.optalert.com/sitemaps.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • WordPresscms

    Found "wp-content/" in the page's HTML

  • Cloudflare Bot Managementcdn

    Cookie set: __cf_bm

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