WHMCS Tags domain-registration In WHMCS, you can configure your domain registration and pricing settings and choose a registrar to customize how you sell domains. When you sell domains, issues with domain availability checks, registration, or renewals can cause serious problems. Domain registrar modules automate the process of registering and managing domains with supported registrars. WHMCS supports many popular registrars by default. To allow your customers to search for domains, you must configure a lookup provider. Some lookup providers support namespinning. The Domains tab in the Client Profile contains details and management options for all of a client's domains. The 101Domain module allows you to register and manage domains with 101Domain. Add your own logo files to display in the Spotlight Extensions section of the domain registration page for any of the TLDs you offer.