The Data Masking transformation masks a phone number without changing the format of the original phone number. For example, the Data Masking transformation can mask the phone number (408) 382-0658 as (607) 256-3106.
The source data can contain numbers, spaces, hyphens, and parentheses. The Data Masking transformation does not mask alphabetic and special characters.
You can configure repeatable output when you mask phone numbers. You must select Repeatable and enter a seed value.