Select a country and enter a postal code. We validate format only against documented patterns. Postal-code format validation does not confirm that an address exists.
Choose a country and optionally enter a postal code, then select Check format.
Important distinctions
Format ≠ address
Postal-code format validation does not confirm that an address exists or that a code is currently assigned for delivery.
Unavailable patterns
If a country has no reliable pattern in the dataset, we label it unavailable rather than inventing a rule.
Frequently asked questions
Does a valid postal-code format prove that an address exists?
No. Postal-code format validation does not confirm that an address exists. It only checks structure against a documented pattern.
Why is my country unsupported?
Some territories lack a published pattern in our dataset. We show that clearly instead of guessing a regex.
