Derived from geographic data, postcodes, UK STD codes, exchange codes and number lengths, the Telephone Number Structural Validation (Mapper) service can verify and improve the accuracy of telephone numbers by ensuring that they meet current dialling standards.

Incorporating updates from Ofcom, plus STD code revisions, Mapper compares existing customer data to the latest telephone number and postcode information, validating and amending records where possible.

Designed to reduce costs and call centre wastage, Mapper corrects STD codes and removes spaces from telephone numbers for dialling equipment. Mapper can also be used to geographically validate STD codes, confirming whether telephone numbers are in the relevant postcode area and making it possible to geographically plot the data for analysis, locality weighting and profiling.

A cost effective way of updating legacy information, Mapper can also be employed to check non-matched telephone numbers, identifying whether poor data structure has had an impact on results.