A top-level domain (TLD) is the part of a domain name after the dot. This represents the highest level of the domain. For example, the top-level domain of the domain www.ionos.ca is .ca.

There are two types of top-level domains:

  • Country-specific top-level domains: (e.g. .ca, .uk, or .us)
  • Generic top-level domains (e.g. .net, .com, .org, .info)

The requirements for country-specific top-level domains vary from country to country. For the Canadian top-level domain .ca, for example, the domain owner must have a private address or company address in Canada.