You can select the "Number Administration History Report (NAH)" sub-menu item of the "Number Administration" Menu item to view the historical information for up to 10 Toll-Free Numbers (TFNs) within the TFNRegistry™ (tfnregistry.somos.com). For more information about this report, please click here. Disclaimer: Any images in this article are intended to be used as a guide for educational purposes only and they may differ slightly from the Production Environment.