Subdomain Finder Professional

Overview

Professional subdomain discovery using open-source methods with export options.

SEO Guide for Subdomain Finder Professional This guide shows how to use the extension for SEO research, content governance, and technical audits. It focuses on lawful, passive discovery and safe validation. When to Use It - Site audits and migration prep - Detecting duplicate or thin content across subdomains - Mapping local or product subdomains - Monitoring brand and property sprawl Typical SEO Questions Answered - Which subdomains are live and should be indexed? - Are there forgotten hosts with legacy content? - Are staging or dev subdomains exposed to search? - Which hosts should be consolidated or redirected? 1. Start with passive sources only. 2. Export CSV and sort by subdomain pattern. 3. Validate DNS and HTTP to confirm live hosts. 4. Audit indexability and content quality per host. 5. Build a consolidation or redirect plan. - DNS OK + HTTP OK: likely active and reachable. - DNS OK + HTTP OPAQUE: reachable but response is blocked by browser policy. - DNS OK + HTTP empty: likely live but not responding on HTTPS. - DNS NO + HTTP empty: likely inactive or misconfigured. Export Formats CSV Columns - subdomain - dns - http - source

0 out of 5
No ratings
Learn more about results and reviews.

Details

Version
1.0.0
Updated
February 11, 2026
Flag concern
Offered by
imranniaz-dev
Size
13.18KiB
Languages
English
Developer
Email
mhussain.programmer@gmail.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Subdomain Finder Professional has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Subdomain Finder Professional handles the following:

Web history

User activity

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

Support

Buzzmatic Advanced SEO-Toolbar

5.0

Professional SEO analysis tool with comprehensive page insights, accessibility testing, and quick access to essential SEO resources.

Subdomain Finder

5.0

Scan subdomains of current website with live status

Visual SEO Audit – On-Page, GDPR & CMS Detector

5.0

SEO, consent, CMS and report tool for meta data, headings, images, cookies, tracking and external font review.

Bulk SEO Traffic Checker

0.0

Paste domains, batch open Ahrefs traffic and domain authority reports, and clean URLs for SEO audits. Free.

Internal Link Checker

5.0

Analyze internal links on web pages and discover new SEO linking opportunities using AI-powered suggestions.

Google Rank Checker

5.0

Check and track Google SERP rankings for any website directly from Chrome, with options to export and copy results.

PrivacyRedirect+

5.0

Automatically redirects visits from known platforms to open-source, privacy-friendly alternatives via farside.link.

Link Highlighter

0.0

Highlights links on a webpage - internal, external, subdomain links, with broken link detection option

LinkLens SEO: Link Checker

0.0

Professional SEO tool that highlights Do-Follow, No-Follow, Sponsored, UGC, No-Opener, and No-Referrer links with detailed tooltips

OnPage SEO Analyzer

0.0

Private and open-source SEO analyzer, with no tracking, no ads, no bullsh*t.

LeadStal GMB Leads Finder

0.0

Extract emails, phones, websites & social profiles from Google Maps results into a clean CSV. Build B2B lead lists fast.

SEO-tools

4.6

SEO-tools - information about domains, site audit for SEO errors, as well as technical audit of any page. Over 100 online services