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Domain report

certain.com

certain.com ranks in the top 0.034% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 25 distinct hosts observed under it.

Explore certain.com in the Web Graph

Connectivity

#45,043harmonic-centrality rank
Top percentile
0.034%
Hosts observed
25

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

DNS records

A
  • 185.158.133.1
AAAA
No records found.
MX
  • 0 certain-com.mail.protection.outlook.com.
NS
  • ns11.dnsmadeeasy.com.
  • ns10.dnsmadeeasy.com.
  • ns15.dnsmadeeasy.com.
  • ns14.dnsmadeeasy.com.
  • ns12.dnsmadeeasy.com.
  • ns13.dnsmadeeasy.com.

Live preview

This is a live, sandboxed embed of certain.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
no-cache, must-revalidate, max-age=0
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=31536000; includeSubDomains
X-Frame-Options
Not sent
X-Content-Type-Options
nosniff
Referrer-Policy
strict-origin-when-cross-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://certain.com/HTTP 302

    → https://www.certain.com/

  2. 2.https://www.certain.com/HTTP 200

Meta tags

Title
Certain — AI-Powered Event Intelligence Platform
Description
Turn every attendee interaction into a high-fidelity sales signal. Certain is the AI-powered event intelligence platform for enterprise marketers.
Canonical
https://certain.com/
Robots
index, follow
Generator
Not set
Open Graph title
Certain — AI-Powered Event Intelligence Platform
Open Graph description
Turn every attendee interaction into a high-fidelity sales signal. Certain is the AI-powered event intelligence platform for enterprise marketers.
Open Graph image
https://certain.com/images/og-default.jpg
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Certain — AI-Powered Event Intelligence Platform
Twitter image
https://certain.com/images/og-default.jpg

robots.txt

Disallow rules (User-agent: *)
1
Disallow rules (other agents)
12

Sitemaps declared:

  • https://www.certain.com/sitemap.xml
  • https://rozz.certain.com/sitemap.xml

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Google Analyticsanalytics

    Found "googletagmanager.com/gtag/js" in the page's HTML

  • Cloudflare Bot Managementcdn

    Cookie set: __cf_bm

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Similar connectivity

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