1 Effective date searches are available only for US area codes. 2  Our sources for non-US NPA-NXX data do not provide this information. 3  If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero. Effective date searches are available only for US area codes. 2  Our sources for non-US NPA-NXX data do not provide this information. 3  If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.
If you press Y (for yes) in response to this message, the batch program ends and control returns to the operating system. Therefore, you can insert the pause command before a section of the batch file you may not want to process. While pause suspends processing of the batch program, you can press CTRL+C and then Y to stop the batch program.
To display a message that is several lines long without displaying other commands, you can include several echo message commands after the echo off command in your batch program. If you use echo off, the command prompt does not appear on your screen. To display the command prompt, type echo on. To prevent echoing of a line, insert an at sign (@) in front of a command in a batch program.