DNS Records are the main contents of a DNS Zone file and are used to map domains to IP addresses and hosts. There are different types of DNS Records supported by the SiteHost Control Panel. These include:
A Record - Address Record. This assigns an IP address to a domain or sub-domain name.
AAAA Record - An IPv6 address record mapping a hostname to a 128-bit IPv6 address.
CNAME Record - Canonical Name record makes one domain name an alias of another. The aliased domain gets all the sub-domains and DNS records of the original. You should use a CNAME record whenever you want associate a new sub-domain to an already existing A record. This way you would only need to change the IP linked with an A record only once, and all CNAME's would then automatically update (as opposed to having to change the IP against multiple records).
MX Record - Mail eXchange record. This maps a domain name to a list of mail servers for that domain.
SRV Record - Service Locator. Used for newer protocols, instead of creating protocol-specific records such as MX.
The correct format for SRV records should be in the following format (see Figure 2).
_service._proto SRV weight port target priority.
TXT Record - A TXT record allows human or machine-readable text to be inserted into a DNS record.
Steps to manage the DNS Zone
Follow these steps to manage DNS Records for a specific Zone:
Select the Zone to manage from the list of DNS zones.
Ensure that "Manual DNS Settings" is selected - otherwise the DNS Records will be read-only. (see Figure 1)
To dynamically add additional DNS records, enter the number required and select the "Add" Button (below the DNS records).
Add/Update the DNS records, ensuring you select the correct Record type (A, CNAME, MX etc).
Select "Update records" to confirm the changes to the zone file.
Note: For details on how long before DNS record changes take effect read the FAQ article Why aren't my DNS changes working yet?