Dutch postal code: four digits then two letters, the shape that makes it unmistakable. It collides with nothing else in the registry, which is what a well-designed postal code looks like.
Label: NL_POSTAL
(?<!\w)\d{4}\s?[A-Z]{2}(?!\w)Amsterdam, 1012 AB bij de gracht. → 1012 ABPostcode 3011AA in Rotterdam. → 3011AAPostcode 1012Postcode AB 1012Tags: nl, location, contact