Address Ninja offers three plans: Starter, Basic, and Pro.
The Starter plan includes checks for house numbers, PO boxes, apartment or suite fields, special characters, and MeinEinkauf.ch. You can also translate all error messages.
The Basic plan includes everything in Starter, plus DHL Station checks and the ability to block DHL Stations.
The Pro plan includes everything in Basic, plus character limits for fields and custom rules using regex.
All plans come with a free trial. Charges are billed in USD every 30 days.