Regex Tester & Validator

This regular expression matches strings that begin with one of the specified 4-digit prefixes: 8058, 5899, 5898, 6010, 6018, 6014, or 6063. After the prefix, it expects between 10 and 15 additional numeric digits, making the total length between 14 and 19 digits. It is typically used to validate specific financial account numbers, custom identifiers, or card-like numbers within enterprise or payment systems.