Observed
FTC Consumer Area Code
The source record's Area Code remains the observed complaint geography.
Research case study
FTC consumer complaints through Area Code geography.
The FTC Do Not Call API can include consumer Area Code, city, state, complaint subject and robocall status. NDS can preserve that observed geography while adding a governed market-family layer.
Derived
NDS Area Code Market
Observed Area Codes can be aggregated into their governed market family without claiming that FTC supplied the market field.
Modeled
ZIP allocation estimate
Where local ZIP analysis is needed, NDS can use Area Code Market plus city/state and crosswalk evidence to produce clearly labeled modeled allocations.
Research status: this page explains the analytical framework. It is not presented here as one of the ten certified national ranking products.