AI Name Studio
All TLD Extension Checker
Check domain name availability across all domain extensions at once - a fast way to see every TLD option for a single name.
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- Save favorite names
- Keep searching
- 30 domain search tools
- Live availability checks
What is the All TLD Extension Checker?
When your exact .com is taken, the right extension can still get you a great domain. The All Extensions checker looks up a single name across hundreds of TLDs simultaneously - .io, .ai, .co, .net, and many more - so you can compare every option in one view.
How the All TLD Extension Checker works
Three steps from idea to available domain.
1
Enter your domain name
Type the exact name you want to check, without an extension.
2
Scan every extension
NameStation checks the name across hundreds of TLDs at once.
3
Compare & choose
Review which extensions are available and pick the best fit.
Loved by 1.4M+ members
Why use the All TLD Extension Checker?
A complete naming toolkit - not just a search box.
Hundreds of extensions at once
Check a single name across hundreds of TLDs in one search.
Fast side-by-side comparison
Instantly compare which extensions are available for your exact name.
Live registry checking
Every extension is checked live against the domain registry.
Choosing the right extension
.com remains the most trusted extension for most businesses, but .io, .ai, and .co have become established alternatives for tech and startup brands when the .com is unavailable.
Checking before you commit
Scanning every extension in one pass helps you avoid registering a name on a less common TLD only to discover the .com was actually available under a slightly different spelling.
Related domain search tools
More ways to find your perfect domain name.
Domain Name Lookup Tool
Look up any domain name in one place. See live availability, name variations, AI brand analysis, alternative domains, and live USPTO/EUIPO trademark screening.
Wildcard Name Generator
Generate names from letter and number patterns using wildcard templates.
Bulk Domain Availability Checker
Check up to 1000 domain names at a time. Fast bulk domain availability check.
Frequently asked questions
Quick answers about the All TLD Extension Checker and how NameStation works.
What does the All Extensions checker do?
It checks a single domain name across hundreds of extensions - .com, .io, .ai, .co, .net, and more - all at once.
How many extensions are checked?
Hundreds of TLDs are checked simultaneously for the name you enter.
Is this different from a single domain lookup?
Yes, Domain Lookup focuses on one domain with deep analysis; this tool focuses on scanning one name across every possible extension.
Save your favorite names
Create a free account to save results from the All TLD Extension Checker, keep searching, and organize names into projects with your team. No credit card required.