Every domain name has a suffix or extension that indicates which top level domain (TLD) it belongs to. For example, in the domain name MyWebsite.com the extension is .com (pronounced dot com). Here are the common ones:

If you see a domain address that doesn't end in the first six listed above, it is likely a domain name assigned to another country. It typically means that the origin of the business is in another country, as per the seventh listed above, which represents the country Canada. Most countries’ registrar will only allow buyers from that country to purchase a domain name from their country. This is typically confirmed by the credit card billing address when the domain is being purchased.