Social Security number masking applies a built-in mask format to change Social Security numbers.
The Data Masking transformation generates a Social Security number that is not valid based on the latest High Group List from the Social Security Administration. The High Group List contains valid numbers that the Social Security Administration has issued. The Data Masking transformation accesses the latest High Group List from the following location:
The Data Masking transformation generates Social Security numbers that are not on the High Group List. The Social Security Administration updates the High Group List every month. Download the latest version of the list from the following location: http://www.socialsecurity.gov/employer/ssns/highgroup.txt
Social Security number format
The Data Masking transformation accepts any SSN format that contains nine digits. The digits can be delimited by any set of characters. For example, the Data Masking transformation accepts the following format: +=54-*9944$#789-,*()”.
Area code requirement
The Data Masking transformation returns a Social Security number that is not valid with the same format as the source. The first three digits of the SSN define the area code. The Data Masking transformation does not mask the area code. It masks the group number and serial number. The source SSN must contain a valid area code. The Data Masking transformation finds the area code on the High Group List and determines a range of unused numbers that it can apply as masked data. If the SSN is not valid, the Data Masking transformation does not mask the source data.
Repeatable Social Security number masking
The Data Masking transformation returns deterministic Social Security numbers with repeatable masking. The Data Masking transformation cannot return all unique Social Security numbers because it cannot return valid Social Security numbers that the Social Security Administration has issued.