Sentinet
Postman
DreamFactory
AWS CloudTrail
MuleSoft Anypoint Platform
Dell Boomi API Management
Boomi
Software AG webMethods
PostalDataPI
Smarty
Melissa Data Quality
PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate โ $0.000028 per query with no tiers or subscriptions.
What you get back: Up to 18 metadata fields per postal code โ city, state/region, coordinates, timezone, three levels of administrative hierarchy, elevation, and more. Sub-5ms cached responses.
Works everywhere: US ZIP codes, UK postcodes, German PLZ, Japanese postal codes, Canadian FSAs, and 230+ more. Format normalization handles case, spacing, and hyphen variations automatically.
Get started in 60 seconds: 1,000 free queries on signup, no credit card required. SDKs for Python and Node.js. MCP server for AI agents (Claude, Cursor, etc.).
Built for developers: REST API, consistent JSON responses across all countries, OpenAPI spec, llms.txt for AI agent discovery.
Sentinet
PostalDataPISentinet is recommended for medium to large enterprises that require a scalable and secure API management platform. It is particularly beneficial for organizations that prioritize flexibility in deployment models and need advanced monitoring and analytics capabilities to optimize their API usage.
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Postman - The Collaboration Platform for API Development
Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
DreamFactory - DreamFactory is an API management platform used to generate, secure, document, and extend APIs.
Melissa Data Quality - Melissa helps companies to harness Big Data, legacy data, and people data (names, addresses, phone numbers, and emails).
AWS CloudTrail - AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you.
MuleSoft Anypoint Platform - Anypoint Platform is a unified, highly productive, hybrid integration platform that creates an application network of apps, data and devices with API-led connectivity.