API archive entry · source-reported
sthan.io Address Verification
Validate and standardize US addresses, with ZIP+4 and deliverability status
Other Data Validation APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
VerifNow
Validates email, phone, IBAN, EU VAT against VIES, and Canadian, Spanish and US national IDs
API key · HTTPS reported · CORS No
RevAddress
US address standardization, congressional and state legislative districts, Census data; free tier
API key · HTTPS reported · CORS No
DataScreenIQ
Screen data for schema drift, type mismatches, and null rate anomalies
API key · HTTPS reported · CORS Yes
Kiprio Email Validation
Email address validation with MX, disposable, role and typo detection
API key · HTTPS reported · CORS Yes
Trestle
Validates the phone number and provides phone metadata
API key · HTTPS reported · CORS Yes
US Autocomplete
Enter address data quickly with real-time address suggestions
API key · HTTPS reported · CORS Yes
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.