ddclient is a Perl-based dynamic DNS client used to update DNS records for dynamic IP address changes. It is particularly useful for users with residential Internet service providers that assign dynamic IP addresses, allowing them to host services or servers with a consistent domain name. ddclient can manage multiple accounts across various dynamic DNS service providers and can be configured to run as a daemon, automatically detecting IP changes at specified intervals.

The client supports various dynamic DNS providers and provides a robust set of configuration options, allowing users to specify how often to check for IP changes, which DNS service to use, and how to handle multiple hostnames. Its active community contributes to ongoing development, making ddclient a reliable choice for individuals and businesses looking to maintain a fixed domain name despite changing IP addresses. The software can be easily installed on various operating systems, enhancing its accessibility for self-hosting enthusiasts.