Compare Chrome extensions: Domain Availability Checker and Whois Lookup vs Microsoft 365

*** TEMPORARILY DOWN due to a botnet abusing our service. We will be working on a fix and will try to issue updates for first week of August. Regular updates will then be put into place!

This extension checks the availability of a domain name. What's the point of going to another page when you can check it from your toolbar. It fully supports IDN Domains encrypted with PunyCode for safe transmission.

Can now quickly change between registrars by click the more... link when you search for a domain name.

A large amount of domain extensions are supported, and if you want to suggest more or other registrars, leave a comment below and on the next release we'll try to put that one in.

You can favourite a domain by clicking on the star when you search. The list is sortable and you can quickly filter by typing in the input box on the favourites tab.

Automatic domain checker, periodically checks the expiry date and alerts you when the domains status changes. Watch domains manually by adding to favourites or check automatically, weekly, fortnightly, monthly or quarterly.

Lookup domain whois information for any extension.