- Home
- Address Verification Software
- UPU POST*CODE API
UPU POST*CODE API
Berne, Switzerland
What it is
UPU POST*CODE API verifies international addresses using official locality and postcode data from UPU member countries. Its functions check a country’s postcode format, confirm localities, find postcodes for localities, find localities for postcodes, and determine whether a postcode matches a locality. LocalityLike suggests official locality names and postal regions from partial input. The API can support customs declarations, web shops, user platforms, and ERP systems that capture international addresses. Integration options include postal websites and local applications, CDS plugins, and access through the CDS API gateway or other middleware. Developer resources include tutorials, quick-start guides, tooling, and sample code for jQuery and Python, with guidance for HTML, web applications, and JavaScript form handling. UPU says response time is guaranteed below one second and server performance can be adjusted to expected call volume. Pricing is available on request, and registered users can request free trial calls by contacting [email protected].
For and against
For
- Provides official international locality and postcode data
- Supports postcode and locality matching
- Offers partial-input locality suggestions
- Integrates through APIs, plugins, or middleware
- Free trial calls can be requested
Against
- Pricing is available only on request
- A security token is required for CDS installations
- Trial details require contacting UPU
The verdict
UPU POST*CODE API focuses on international address validation, lookup, and suggestions. Its documented integrations and developer resources support adding these checks to address-capture systems.
Who it suits
The API suits designated postal operators, businesses, and individuals handling international address entry or validation. It is useful for systems that need locality suggestions and postcode matching.
Plans and prices
Contact UPU for pricing
Costs and free-trial details are available by contacting UPU
Read 11 Oct 2026 · upu.int
On the record
- Address data
- It provides official locality names and postcode data from UPU member countries.upu.int · read 11 Oct 2026
- CDS authentication
- CDS installations use an alphanumeric security token received from a regional support centre, and tokens are unique to countries.upu.int · read 11 Oct 2026
- Developer resources
- UPU says API documentation includes tutorials, quick-start guides, and developer tooling.upu.int · read 11 Oct 2026
- Development
- The guide describes HTML and web application use, JavaScript form handling, and sample code for JQuery and Python.upu.int · read 11 Oct 2026
- Documentation
- The API documentation includes tutorials, quick-start guides, and developer tooling.upu.int · read 11 Oct 2026
- Integrations
- The API can be used as a CDS plugin, through the CDS API gateway or other middleware, or integrated into postal websites and local applications.upu.int · read 11 Oct 2026
- Intended users
- UPU describes the API as useful to designated operators, businesses, and individuals handling international addresses.upu.int · read 11 Oct 2026
- Locality and postcode matching
- Functions return postcodes for a locality, localities for a postcode, and check whether a postcode matches a locality.upu.int · read 11 Oct 2026
- Locality lookup
- The LocalityLike function suggests official localities and postal regions matching the start of an input string.upu.int · read 11 Oct 2026
- Maker
- The Universal Postal Union says it was established in 1874 and is headquartered in Berne, Switzerland.upu.int · read 11 Oct 2026
- Performance
- UPU says it guarantees a response time of less than one second and can adjust server performance to expected call volume.upu.int · read 11 Oct 2026
- Postcode validation
- Its functions check postcode format and return a country’s postcode format.upu.int · read 11 Oct 2026
- Pricing and support
- For questions about costs, documentation, or a free trial, the guide directs users to [email protected].upu.int · read 11 Oct 2026
- Programming
- The guide describes HTML and JavaScript use and says sample code is available for jQuery and Python.upu.int · read 11 Oct 2026
- Purpose
- POST*CODE API verifies international addresses and helps eliminate addressing inaccuracies.upu.int · read 11 Oct 2026
- Secure access
- The API can be accessed through the CDS API gateway or other middleware for secure data transmission.upu.int · read 11 Oct 2026
- Security
- The CDS setup guide describes a security token used to identify and authenticate a CDS installation, with tokens unique to countries.upu.int · read 11 Oct 2026
- Suggestions
- The LocalityLike function suggests official locality names and postal regions from a partial locality input.upu.int · read 11 Oct 2026
