CA · CAN
Canada Social Insurance Number format
Official and reviewed ID format references, with permanently masked examples for copy and QA. This site does not validate identity IDs.
Social Insurance Number · Permanently masked examples
Data snapshot: Sources and data boundaries
Official public format
Social Insurance Number
SIN
Regex
^\d{3} \d{3} \d{3}$708 372 9*8
Regex and masked examples are reference only. This page does not validate identity IDs.
Data provenance
Sources
Data snapshot: 2026-10-05