In NAS, from the Thousands-Block/CO Code toolbar, select Forecast, then select Request Update to Excluded Rate Center.

We recommend that you query the NPAC to determine the contamination status of a thousands-block. For assistance with performing the NPAC queries, contact the NPAC help desk at 844-820-8039.

Once you’ve submitted a thousands-block forecast or a thousands-block disconnect, then you cannot withdraw from pooling in an optional rate center.

You can locate this information on the website, by going to Thousands-Block Reports, select NPA/Rate Center Reports. Then select the state and NPA and click Submit. This will bring up a list of rate centers with their current pooling status. To view the Rate Center Pooling Status Designations, select the Rate Center Pooling Status Designations Defined on the Thousands-Block Reports page.