The Powerpack management console at Messaging > Powerpacks allows you to configure the source number pool for your SMS and MMS traffic needs.
Specify how many phone numbers you'd like to add to your Powerpack for a country, region, or area code. Plivo will automatically rent the specified number of phone numbers for your account and add them to your Powerpack number pool.
We recommend you use the Advanced Settings options to configure your number pool. For region-based number resolution to work best, you should have a well-balanced number pool with an adequate number of phone numbers across all the regions you intend to reach.
Specify how many phone numbers from each area code or region that you'd like to add to your Powerpack number pool. Estimate this number based on your expected outbound daily traffic to each region.
Pro tip: If you don’t need to get more granular than state-level or regional matching, simply specify the total count of numbers against any prefix of that state.