Build Better Apps
with Payloadic
Powerful data validation APIs that automate phone verification, ZIP code lookup, and location intelligence for modern applications.
Our APIs
Production-ready APIs to validate data, enrich user profiles, and power location-aware features.
US ZIP Code & Radius API
USPS-verified ZIP code data with radius search, distance calculation, and smart autocomplete. Perfect for store locators, delivery zones, and address validation.
- ✓43.6K USPS-verified ZIP codes
- ✓Radius search & distance calculation
- ✓Monthly USPS updates
- ✓Sub-100ms response time
Phone Validator API
International phone number validation with comprehensive metadata. Block fake signups, verify users, and format numbers correctly.
- ✓Global phone number validation
- ✓E.164 & international formatting
- ✓Carrier & region detection
- ✓Number type classification
What Makes Us Different
We're committed to providing the best APIs and support for your development needs
Production-Ready
Built for scale and reliability
- ✓USPS-verified data
- ✓99.999% uptime SLA
- ✓Enterprise-grade infrastructure
Lightning Fast
Optimized for performance
- ✓<100ms response time
- ✓Global CDN distribution
- ✓Optimized API endpoints
Developer-First
Built by developers, for developers
- ✓Comprehensive documentation
- ✓Ready-to-use code examples
- ✓Responsive support team
Powering Diverse Applications
From e-commerce to logistics, our APIs provide the backbone for location-aware and data-validated features.
E-commerce & Retail
Validate addresses, calculate shipping zones, and prevent fake signups during checkout.
Logistics & Delivery
Optimize routes, define service areas, and estimate delivery times with precision.
Marketing & Sales Tech
Enable geotargeting, manage territories, and enrich CRM data with location insights.
Business Intelligence
Augment datasets with geographic data for market analysis and strategic planning.
SaaS & Mobile Apps
Integrate location-based features, user verification, and content personalization.
Forms & User Input
Streamline data entry with autocomplete and ensure accuracy of contact information.
Effortless Integration, Powerful Results
Start leveraging data validation in your applications in just a few simple steps.
Get Your API Key
Sign up on RapidAPI, choose a plan (free tier available), and instantly receive your API key.
Call API Endpoints
Use simple HTTP requests to our RESTful endpoints from any application or framework.
Build Better Apps
Receive structured JSON data and integrate valuable intelligence seamlessly into your projects.
Latest from Our Blog
Tutorials, guides, and best practices for building with our APIs
How to Block Fake Phone Numbers in Python: Complete Guide
Learn how to validate phone numbers and prevent fake signups in your Python applications using real-time phone validation APIs.
Build a Store Locator with React and ZIP Code Radius API - Complete 2026 Guide
Create a production-ready store locator in React using the ZIP Code Radius API. Includes interactive map, distance calculation, and mobile-responsive design.
How to Validate Phone Numbers in Next.js - Complete Guide 2026
Learn how to implement phone number validation in Next.js applications using the Payloadic Phone Validator API. Includes code examples, TypeScript support, and best practices for production apps.
Ready to Build Better Applications?
Join thousands of developers leveraging precise data validation. Explore our APIs and find the perfect fit for your project.
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