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Add an alias (CNAME) resource record to a zone

Updated: January 21, 2005

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

To add an alias (CNAME) resource record to a zone

Using the Windows interface

  1. Open DNS.

  2. In the console tree, right-click the applicable forward lookup zone, and then click New Alias.

  3. In the Alias name text box, type the alias name.

  4. In the Fully qualified domain name (FQDN) for target host text box, type the fully qualified domain name of the DNS host computer for which this alias is to be used.

    As an option, you can click Browse to search the DNS namespace for hosts in this domain that have host (A) records already defined.

  5. Click OK to add the new record to the zone.

Notes

  • To perform this procedure, you must be a member of the Administrators group on the local computer, or you must have been delegated the appropriate authority. If the computer is joined to a domain, members of the Domain Admins group might be able to perform this procedure. As a security best practice, consider using Run as to perform this procedure.

  • To open DNS, click Start, click Control Panel, double-click Administrative Tools, and then double-click DNS.

Using a command line

  1. Open Command Prompt.

  2. Type: dnscmd ServerName /RecordAdd ZoneNameNodeName [/Aging] [/OpenAcl] [Ttl] CNAME HostName|DomainName

 

Value Description

dnscmd

Specifies the name of the command-line program.

ServerName

Required. Specifies the DNS host name of the DNS server. You can also type the IP address of the DNS server. To specify the DNS server on the local computer, you can also type a period (.)

/RecordAdd

Required. Specifies the command to add a new resource record.

ZoneName

Required. Specifies the name of the zone where this CNAME resource record will be added.

NodeName

Required. Specifies the FQDN of the node in the DNS namespace. You can also type the node name relative to the ZoneName or @, which specifies the zone's root node.

/Aging

Specifies that this resource record is aged and scavenged. If this parameter is not used, the resource record remains in the DNS database unless it is manually updated or removed.

/OpenAcl

Specifies that new records are open to modification by any user. Without this parameter, only administrators may modify the new record.

Ttl

Specifies the Time-To-Live (TTL) setting for the resource record. (The default TTL is defined in SOA resource record).

CNAME

Required. Specifies the resource record type of the record you are adding.

HostName|DomainName

Required. Specifies the FQDN of any valid DNS host or domain name in the namespace. For FQDN's, a trailing period (.) is used to fully qualify the name.

Notes

  • To perform this procedure, you must be a member of the Administrators group on the local computer, or you must have been delegated the appropriate authority. If the computer is joined to a domain, members of the Domain Admins group might be able to perform this procedure. As a security best practice, consider using Run as to perform this procedure.

  • To open a command prompt, click Start, point to All programs, point to Accessories, and then click Command prompt.

  • This procedure requires the Dnscmd Windows support tool. For information about installing Windows support tools, see Related Topics.

  • To view the complete syntax for this command, at a command prompt, type:

    dnscmd /RecordAdd /help

Formatting legend

Format Meaning

Italic

Information that the user must supply

Bold

Elements that the user must type exactly as shown

Ellipsis (...)

Parameter that can be repeated several times in a command line

Between brackets ([])

Optional items

Between braces ({}); choices separated by pipe (|). Example: {even|odd}

Set of choices from which the user must choose only one

Courier font

Code or program output

Information about functional differences

  • Your server might function differently based on the version and edition of the operating system that is installed, your account permissions, and your menu settings. For more information, see Viewing Help on the Web.

See Also

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