CEP Lookup

Look up any Brazilian CEP (ZIP code) and get the full address information including street, neighborhood, city, and state.

This tool generates fictitious data intended exclusively for software testing and development purposes. The data does not correspond to real people or entities and must not be used for illegal, fraudulent purposes, or in ways that violate the privacy of others. Compliant with LGPD (Brazilian Data Protection Law).

See also:

My IP
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About the CEP Lookup

What is a CEP?

CEP (Codigo de Enderecamento Postal) is Brazil's postal code system, maintained by Correios (the Brazilian postal service). It consists of 8 digits in the format XXXXX-XXX. The first digit identifies the region, the next two identify the sub-region, and the remaining digits narrow down to specific streets, neighborhoods, or post offices. CEP is essential for address validation, shipping cost calculation, and delivery logistics in Brazilian applications.

How does the lookup work?

Enter a valid 8-digit CEP and the tool queries a postal database to return the complete address information: street name, neighborhood, city, state, and additional details. This is useful for auto-filling address forms, validating user-provided addresses, and testing integrations with shipping and logistics APIs. Results include all fields commonly needed for address forms in Brazilian systems.

Developer use cases

CEP lookup is one of the most common integrations in Brazilian web applications. E-commerce platforms use it to auto-fill shipping addresses and calculate delivery costs. Registration forms use it to validate addresses and reduce user input errors. Logistics systems use it to determine delivery zones and routing. Having a quick CEP lookup tool helps developers test these integrations without querying production APIs.