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Domain report

extensionmaster.com

extensionmaster.com ranks in the top 0.25% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 1 distinct host observed under it.

Explore extensionmaster.com in the Web Graph

Connectivity

#336,100harmonic-centrality rank
Top percentile
0.25%
Hosts observed
1

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

DNS records

A
  • 104.21.7.24
  • 172.67.135.166
AAAA
  • 2606:4700:3036::ac43:87a6
  • 2606:4700:3037::6815:718
MX
  • 10 mx01.mail.icloud.com.
  • 10 mx02.mail.icloud.com.
NS
  • bart.ns.cloudflare.com.
  • stephane.ns.cloudflare.com.

Live preview

This is a live, sandboxed embed of extensionmaster.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
s-maxage=31536000
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://extensionmaster.com/HTTP 200

Meta tags

Title
ExtensionMaster - Free Chrome Extensions
Description
ExtensionMaster builds focused, free Chrome extensions that do one job well — easy on permissions, and we never sell your data.
Canonical
Not set
Robots
Not set
Generator
Not set
Open Graph title
ExtensionMaster - Free Chrome Extensions
Open Graph description
ExtensionMaster builds focused, free Chrome extensions that do one job well — easy on permissions, and we never sell your data.
Open Graph image
https://extensionmaster.com/opengraph-image?b646326bb187f338
Open Graph type
website
Twitter card
summary_large_image
Twitter title
ExtensionMaster - Free Chrome Extensions
Twitter image
https://extensionmaster.com/opengraph-image?b646326bb187f338

robots.txt

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

No Sitemap declared in robots.txt.

Technology detected

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

  • Cloudflarecdn

    Server: cloudflare

  • Next.jsframework

    X-Powered-By: Next.js

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