Top-Level Domain (TLD) refers to the final part of a domain name, such as .com, .co.uk, or .ie. It helps indicate the type, origin, or intended use of a domain.

In a Fetchify email-validation context, the TLD is one of the first signals checked when assessing domain health. Certain TLDs are strongly associated with established, long-lived domains, while others are more commonly used for disposable or short-term email services. Analysing the TLD helps Fetchify identify mistyped domains, flag higher-risk email patterns, and improve overall validation accuracy before an address enters your systems.