Pincode

Validator and formatter for Indian Postal Index Numbers (PIN codes).

A valid Indian PIN code is a 6-digit number where the first digit is 1–9 (never 0). No checksum exists for Indian PIN codes — validation is format-only.

Accepted input forms (all normalised before validation):

• Raw 6 digits: "560001"

• India Post display form (space after digit 3): "560 001"

• Whitespace-padded: " 560001 "

• Multiple internal spaces: "560 001" — all internal whitespace is stripped

PIN codes are not PII (they are public address information) — no mask() method is provided. See the KotIndia API design rationale for details.

This object is stateless and thread-safe.

Samples

Pincode.validate("560001") // ValidationResult.Valid
Pincode.format("560001") // "560001"