apex domain

The name at the very top of a DNS (glossary)DNS Domain Name System The internet's directory that links domain names to computer addresses. Full definition of DNS zone, with nothing in front of it, such as example.com rather than www.example.com. The zone's SOA (glossary)SOA record Start of Authority The record at the top of a DNS zone holding its serial number and timing settings. Full definition of SOA record and NS records (glossary)NS record Name Server record A DNS record that lists the name servers responsible for a domain. Full definition of NS record live here. A CNAME record (glossary)CNAME record Canonical Name record A DNS record that makes one domain name an alias of another. Full definition of CNAME record cannot be placed at this name, which complicates pointing it to some hosting services.