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.
sthan.io Address Autocomplete
Real-time US address suggestions as users type
API key · HTTPS reported · CORS No
sthan.io Address Parser
Parse freeform US addresses into structured fields (house number, street, unit, city, state, ZIP)
API key · HTTPS reported · CORS No
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
Veriport
EU VAT validation (VIES), VAT rates, IBAN validation, French company data
API key · HTTPS reported · CORS Yes
DataScreenIQ
Screen data for schema drift, type mismatches, and null rate anomalies
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.