The correct registrable domain
The service normalizes IDNs, removes subdomains, and uses the Public Suffix List before requesting registration data.
Domain lifecycle
Domain expiration monitoring
UpChecker checks registration expiration regularly and warns your team in advance, so an important domain is never lost because a renewal was missed.
RDAP + WHOIS
the data source is shown
IDNs and subdomains
the registrable domain is checked
Early warning
before registration expires
Renewal under control
Never miss a domain renewal deadline
Continuous monitoring turns a one-time WHOIS date into a reliable workflow with status history and notifications.
Alerts before expiration
Receive an event and notification when the configured number of days remains before renewal.
Transparent source data
Results include registration and expiration dates, the registrar, and the RDAP or WHOIS source.
How it works
From domain name to alert in three steps
Configure the monitor once and UpChecker will run future checks automatically.
1
Add a domain, including an IDN or subdomain.
2
Choose how early the renewal warning should arrive.
3
Receive events without running WHOIS manually.
Protect your domain
Schedule regular checks before the next renewal
Monitor domain registration alongside the rest of your website infrastructure.