Domain Name Checker

Privacy policy. Last updated 8 November 2026.

This browser extension checks whether domain names are free to register. In short: the names you type are sent to the official registries that run each ending, and nothing is sent to us.

What leaves your computer

When you press "Check", each name you typed (and its variations, if you ask for them) is looked up with the registry that runs that ending, through its public RDAP service, the official successor to WHOIS:

Only the domain names are sent. Each registry handles its lookups under its own terms.

What it does not do

Permissions

Storage

Nothing is stored. Your names and results disappear when you close the tab, unless you choose to download them as a CSV file.

Contact

Questions: taz@aitaz.com. Made by Himanshu Bhatia (Taz).