Identify an invalid postal address when entering the details
Address assistant via the web service
Your options
Our services
Benefit by having correct addresses as soon as they are entered. The autocomplete feature, which comes with preselection, allows you or your customers to enter address data quickly and accurately too. You access and verify this data in no time at all.
Verifying non-personal address elements:
- Street / no.
- Postcode / town
The address assistant is free of charge and operates via a web service (REST/SOAP). This interface provides access to other, fee-based address services (e.g. address verification, address maintenance).
You can find more information on the Swiss Post address assistant in the “Verify addresses” factsheet (PDF, 77.7 KB).
Our database
Validated, official postal addresses
Swiss Post’s address database is unrivalled in Switzerland in terms of quality and quantity. We use our address services to compare our address data with this database. We ensure we are in strict compliance with the legal requirements of data protection. We do not sell, rent or lease any addresses.
We use the very latest data from the street directory covering Switzerland and Liechtenstein for the address assistant.
Prices
Check postal addresses free of charge
We provide the “Address assistant” for verifying postal addresses free of charge and with no need for any contractual agreement.
What you need
Web service (REST/SOAP)
Use the web service to incorporate the address assistant into your IT environment with ease and without any activation fees. If you would like more information about web service connections via REST or SOAP, feel free to consult our technical specifications (“REST address web services” and “SOAP address web services”).
Reference

Address verification isn’t a game of chance
Swiss Casinos
Would you like some advice?
Address Competence Center
Contact us
Call us Monday – Friday: 8 a.m. to 12 noon and 1.30 p.m. to 5 p.m., or send us a message.
+41 58 386 67 67
Personal advice
We would be pleased to set aside time for a non-binding consultation.
How to find us
Post CH Ltd
Address Competence Center
Sternmatt 6
P.O. Box
6010 Kriens 2