Get alerted when a taken domain becomes available

The window is short

A domain becomes available for minutes, sometimes hours. You have to be watching when it happens. Checking manually every day is unrealistic. You'll miss it.

Expiring domains go through a grace period, then a deletion period, before they're released. Popular names get picked up by domain catchers within seconds of dropping.

How it works

1. 1

   Search for the domain

   Enter the domain name. You'll see its current status, expiry date, and registrar information pulled from the RDAP registry.

2. 2

   Add it to your watchlist

   One click adds the domain to your monitored list. Domain Sentinel checks it daily via RDAP.

3. 3

   Get the email

   The moment the domain's status changes to available, you get an email. Log in to your watchlist, or go straight to your registrar.

From the blog

• Get notified when a domain becomes availableSet up a domain availability notification to know when a domain you want becomes free to register. How it works and when to use backorder instead.
• How domain availability checkers work: cache, WHOIS, and RDAPWhy do two domain checkers give different results? Learn how registrar caches, WHOIS, and RDAP work and what 'available' actually means before you try to register.
• Domain drop catching explained: how it works and when to use itDomain drop catching lets services register expiring domains in milliseconds. Learn how it works, who it is for, and when a simple availability alert is enough.
• Domain drop list: what it is and how to use oneWhat a domain drop list is, how it is generated from RDAP data, where to find the best free and paid lists, and how to filter thousands of entries efficiently.