Differences between the A, CNAME, ALIAS and URL records

Differences between the A, CNAME, ALIAS and URL records

•    The A record maps a name to one or more IP addresses, when the IP are known and stable. 當IP已知且穩定時，A記錄將名稱映射到一個或多個IP地址

•    The CNAME record maps a name to another name. It should only be used when there are no other records on that name. CNAME記錄將名稱映射到另一個名稱。 只有在沒有其他記錄的情況下才能使用。

•    The ALIAS record maps a name to another name, but in turns it can coexist with other records on that name. ALIAS記錄將名稱映射到另一個名稱，但是它可以與該名稱上的其他記錄共存。

•    The URL record redirects the name to the target name using the HTTP 301 status code.