Getting Started With Domain Checker

You check many domain names at once with Domain Checker by installing the free Chrome extension, pasting your list of candidate names, selecting the extensions you care about, and running one scan. Every keyword is tested against every TLD in a single pass, and the answers come from official registries over RDAP rather than from a registrar's upsell page.

What Domain Checker is

Domain Availability Checker — Bulk Search is a free Chrome extension by Degird, built for the hour every naming session loses to a registrar search box. A registrar answers one query at a time and wraps each answer in premium suggestions and a checkout funnel; Domain Checker sends your entire keyword × TLD matrix in one pass and hands back a grid.

Two properties matter before you trust a tool with a list of unregistered names. First, accuracy: lookups run against 15+ official global registry providers using RDAP, the structured successor to WHOIS, so an "available" result is what the registry itself responded — not an inference from a scraped page. Second, privacy: all operations run locally in your browser. Your keyword lists and scan history live in local storage, there is no account and no analytics, and the only outbound traffic is the registry lookup itself.

Your first scan

Install the extension from the Chrome Web Store and open it from the toolbar. Paste your keywords — one candidate name per line — and tick the TLDs you would actually accept: .com, .net, .io, .ai, .co, .xyz and more are available out of the box.

Run the scan. Results fill a keyword × TLD grid as registry answers arrive, so you see immediately that one stem is free everywhere while another is gone across the board. Toggle the available-only filter to collapse the wall of red into a usable shortlist.

The full bulk workflow — including the AI brand name generator for when your list runs dry — is covered in the bulk scanning guide. Adding niche or country-code TLDs and exporting the shortlist to CSV is covered in custom TLDs and CSV export.

Next steps

• Run a full bulk naming session
• Add custom TLDs and export results