A subdomain is a secondary domain that's part of the main domain. For example:
zyrosite.comis a domain
example.zyrosite.comis a subdomain
www.zyrosite.comis a subdomain
Subdomains are created in the domain's DNS zone. The domain nameservers always indicate where the domain's DNS zone is managed from. Learn more: How to find your domain
If your domain points to Zyro via nameservers (
dns2.zyro.com), you can create subdomains by adding A or CNAME records in your domain's DNS management zone.