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Chrome Extension · by Degird

The Free Bulk Domain Availability Checker

Paste every name you are considering, pick every extension you care about, and check them all in one pass — .com, .net, .io, .ai, .co, .xyz and beyond.

Domain Availability Checker — Bulk Search queries 15+ official global registries over RDAP, the modern successor to WHOIS, so what you see is registry truth rather than a registrar's upsell page. Out of names? The built-in AI brand name generator will write you a fresh batch from a seed keyword.

Add to Chrome — Free
See How It Works

Free forever · No account required · Runs locally in Chrome

Built for Naming Sprints

Stop Checking Domains One at a Time

Registrar search boxes are built to sell you a domain, not to help you explore a hundred ideas. This extension inverts that: many keywords, many extensions, one scan, and a results grid you can actually reason about.

Multi-TLD Matrix Scanning
15+ Official RDAP Registries
AI Brand Name Generator
Runs Entirely Locally

Who It's For

Who Uses Domain Checker?

If you have ever kept a notes file of forty candidate names and typed them into a registrar one by one, this was built for your afternoon.

Founders Naming a Startup

Naming is iterative: you brainstorm twenty candidates, discover eighteen are taken, and go again. Load the whole shortlist, scan it against every extension you would actually accept, and see the surviving options as a single grid instead of a browser history full of registrar tabs.

Domain Investors

Screen large keyword lists across multiple TLDs in one pass, filter to only what is unregistered, and export the survivors to CSV for your own scoring model.

Agencies Naming Client Brands

Bring a client a shortlist where every name is already confirmed available on the extensions that matter, rather than a deck that falls apart the moment someone checks.

SEO Teams Building Site Networks

Keyword-led naming means testing many stems against many extensions, including country-code TLDs for regional targeting. Custom TLD injection lets you add exactly the extensions your strategy needs, and the grid shows coverage across the whole set at once.

Side-Project Builders

You have a weekend and an idea. Find a name that is free before you write a line of code, without creating an account anywhere.

Product & Marketing Teams

Check campaign, sub-brand, and microsite names in bulk, then hand the CSV to whoever owns the registrar account.

Anyone Tired of Being Upsold

Type a name into a registrar and you get one answer, a wall of premium suggestions, and a checkout funnel. Type fifty names here and you get fifty answers from the registries themselves — no cart, no countdown timer, no alternative extensions you never asked about.

Core Features

Everything a Naming Session Actually Needs

Bulk input, authoritative lookups, name generation when you run dry, and an export at the end. Nothing else bolted on.

01 / 09

Multi-TLD Matrix Scanning

Check availability across .com, .net, .io, .ai, .co, .xyz and more simultaneously. Every keyword you enter is tested against every extension you select in a single pass, so a list of twenty names and six extensions becomes one scan rather than a hundred and twenty manual searches. You stop losing candidates simply because you got bored halfway through checking them.

Simple Workflow

How Domain Checker Works

Four steps from a messy list of ideas to an exported shortlist of names you can register.

01

Enter or Generate Names

Paste your keyword list into the extension, or seed the AI brand name generator and let it produce variations and modifiers for you.

02

Pick Your TLDs

Select from .com, .net, .io, .ai, .co, .xyz and more, and inject any niche or country-code extension your project needs.

03

Scan the Matrix

Every keyword is checked against every extension over RDAP against official registries, filling the results grid as answers arrive.

04

Filter & Export

Collapse the grid to available domains only, then export the shortlist as CSV — your session stays saved locally for next time.

Pricing

Free Forever. No Account. No Catch.

Domain Checker is a free Chrome extension. There is no paid tier, no trial timer, and nothing to sign up for — install it and start scanning.

Free Forever

Free Chrome Extension
$0

no account required

The complete extension: bulk scanning, RDAP lookups, AI name generation, custom TLDs, filtering, and CSV export.

Bulk multi-keyword, multi-TLD scanning
RDAP lookups across 15+ official registries
AI brand name generator
Custom and country-code TLD injection
Dynamic results grid with available-only filtering
CSV export of your results
Local session memory and scan history
No tracking, no analytics, no account
Add to Chrome — Free

Version 2.0.1 · 31.35 KiB · listed under Tools and Productivity on the Chrome Web Store. Domain Checker reports availability from registry data — registering a domain still happens at the registrar of your choice.

Full Feature Set

More Inside the Extension

Small details that decide whether a bulk checker is genuinely faster than the registrar search box.

Bulk Keyword Input

Check a whole list of candidate names in a single scan.

Keyword × TLD Grid

Every combination visible at once instead of one answer per search.

RDAP Protocol

Structured registry responses, the modern successor to WHOIS scraping.

15+ Registry Providers

Lookups routed to the official registry for each extension.

Popular TLD Coverage

.com, .net, .io, .ai, .co, .xyz and more selectable out of the box.

Add Your Own TLDs

Inject niche or country-code extensions whenever a project needs them.

AI Name Concepts

Seed a keyword and get linguistic variations and modifiers back.

Variation Modifiers

Prefixes, suffixes, and word play expand a stem into a candidate set.

Available-Only View

Hide everything registered and read just the usable shortlist.

CSV Download

Export filtered or full results straight into a spreadsheet.

Scan History

Past scans are kept locally so you can pick up where you left off.

Auto-Saved Progress

Long scans survive closing the popup or switching tabs.

Lightweight Build

A 31.35 KiB extension — no bundled framework sitting in your browser.

No Analytics

No tracking pixels, no telemetry, no data sold to third parties.

Privacy First

Your Name Ideas Never Leave Your Machine

A list of unregistered names you are considering is strategy, not search history. Domain Checker performs all of its operations locally: your keywords are used to build registry queries and nothing else. There is no account, no analytics, no telemetry, and no Degird server sitting between you and the answer.

What stays on your device:

Your keyword lists — typed or AI-generated, held locally in the extension
Your scan history — saved to local storage, not to any account
Your exports — CSV files written straight to your own downloads

The only outbound traffic is the RDAP lookup itself, which goes to the official registry provider for each extension. The developer declares that user data is not sold to third parties and is not used for purposes unrelated to the extension's core function.

Why We Built It

Built for the Hour
You Lose to a Search Box

Every naming session ends the same way. You have a list of candidates, a registrar tab open, and a rhythm: type, wait, read, close the upsell, delete, type again. Twenty names across five extensions is a hundred searches, and somewhere around search sixty you start accepting worse names purely because checking is exhausting.

The frustrating part is that none of that work is hard — it is just repetitive. Registries already publish availability through RDAP, a structured protocol designed to be queried by software rather than parsed out of a WHOIS text blob. The answers exist. What was missing was a tool that asked for all of them at once and showed you the whole grid instead of one cell at a time.

So Domain Availability Checker — Bulk Search does exactly that and stops. It takes your list, expands it across every extension you selected, queries the official registries, and hands you a filterable grid and a CSV. It does not sell you the domain, it does not want an account, and it does not send your unregistered name ideas anywhere.

One Pass, Not a Hundred

Every keyword against every extension in a single scan.

Registry Truth

RDAP answers from official providers, not scraped pages.

Ideas on Tap

The AI generator restarts a session that has run out of names.

A Shortlist You Can Share

Filter to available, export to CSV, hand it to your team.

Nothing Watching

No tracking, no analytics, no external server beyond the registries.

Free and Small

A 31.35 KiB extension that costs nothing and asks for no account.

Reviews

What People Say
About Domain Checker

Published verbatim, unedited, from people using it.

This tool helped me find the perfect domain for my fashion brand from a bulk list. Easy to use and checks everything in one place. Love it!

Asaduzzaman

FAQ

Frequently Asked Questions

Get Started

Check Every Name You Are Considering in One Pass

Install Domain Availability Checker — Bulk Search, paste your list, pick your extensions, and get a filterable grid of what is actually free. It costs nothing and asks for no account.

Add to Chrome — Free
Read the Guide

Free forever · No account required · Runs locally in Chrome