Beagle Security Domain Expiry Checker is a free online tool that allows users to check the expiration date of domain names. The tool requires users to input a website URL to retrieve domain expiration information. The tool provides email notification functionality, allowing users to receive alerts when their domain is approaching expiration. Users can enter an email address to receive OTP verification, after which they will receive future notifications regarding domain expiry. The tool is designed to help domain owners track expiration dates to prevent loss of domain ownership. Domain names that expire go through various stages including grace periods, redemption periods, and potential auction if not renewed. The tool aims to help users avoid losing their domains by providing timely expiration information. The service is offered by Beagle Security, which also provides automated penetration testing services. The domain expiry checker operates as a standalone free tool accessible through their website.