JP · JPN
Japan My Number format
Official and reviewed ID format references, with permanently masked examples for copy and QA. This site does not validate identity IDs.
My Number · Permanently masked examples
Data snapshot: Sources and data boundaries
Official public format
My Number
個人番号
Regex
^\d{4} \d{4} \d{4}$9852 381* 1083
Regex and masked examples are reference only. This page does not validate identity IDs.
Data provenance
Sources
Data snapshot: 2026-10-05