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The Difference Between CNAME and A
Article Summary

Title: The Difference Between CNAME and A
Description:What is the difference between CNAME and A DNS records?
Key Words:dns, cname, a, records, difference, vs, versus
Type:FAQs
Category:DNS FAQs
Last Updated:2004-01-08 04:53:06

The Difference Between CNAME and A


What is the difference between CNAME and A DNS records?



An A DNS record directly equates a hostname to an IP address. Use an IP address as the destination field in the DNS Control Panel.

A CNAME DNS record does not directly resolve to an IP address. Instead, it refers to a relative or absolute hostname. A relative hostname is indicated by no period (.) at the end of the hostname. An absolute hostname is indicated by the trailing period (.).

When a DNS query is made for a CNAME, the hostname that is pointed to is used to obtain the actual IP address. The pointed-to hostname may itself be another CNAME, or it may directly provide the IP address using an A entry.

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