Specify area code rules

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server 2008, Windows Server 2008 R2, Windows Server 8 Beta

To specify area code rules

  1. Open Phone and Modem Options in Control Panel.

  2. On the Dialing Rules tab, click the location to modify, and then click Edit.

    To create a new location, click New.

  3. Click the Area Code Rules tab.

  4. To add a new area code rule, click New.

    To edit an existing rule, click the rule and then click Edit.

  5. In Area code, enter the area or city code.

  6. In Prefixes, select one of the following:

    • To apply the rule to all prefixes in the area code, select the Include all the prefixes within this area code check box.

    • To apply the rule to specific prefixes, select the Include only the prefixes in the list below check box, click Add, enter one or more prefix, and then click OK.

  7. In Rules, select one or both of the following:

    • To dial a number before the phone numbers that contain these prefixes, select the Dial check box, and then type the digits to dial.

    • To dial the area code before the phone number, select the Include the area code check box.


  • Performing this task does not require you to have administrative credentials. Therefore, as a security best practice, consider performing this task as a user without administrative credentials.

  • To open a Control Panel item, click Start, click Control Panel, and then double-click the appropriate icon.

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


Dialing rules overview
Change dialing properties for a location