DataScreenIQ
Screen data for schema drift, type mismatches, and null rate anomalies
Data Validation · API key · HTTPS
Data Validation APIs
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Ordered by reported HTTPS, CORS support, no-auth access, then changed/observed facts. Access signals are not a popularity or quality score.
Kiprio Email Validation
Email address validation with MX, disposable, role and typo detection
Data Validation · API key · HTTPS
Trestle
Validates the phone number and provides phone metadata
Data Validation · API key · HTTPS
US Autocomplete
Enter address data quickly with real-time address suggestions
Data Validation · API key · HTTPS
US Extract
Extract postal addresses from any text including emails
Data Validation · API key · HTTPS
US Street Address
Validate and append data for any US postal address
Data Validation · API key · HTTPS
VerifyEd
Verify academic credentials — 912K+ schools, 2,592 diploma mills
Data Validation · API key · HTTPS
Attestwire
Validate EN 16931 e-invoices: XRechnung, ZUGFeRD, Factur-X, Peppol BIS
Data Validation · API key · HTTPS
Temsor
Validates Turkish national ID, tax number, IBAN, phone, plate and parses addresses
Data Validation · API key · HTTPS
US Autocomplete
Enter address data quickly with real-time address suggestions
Data Validation · API key · HTTPS
US Extract
Extract postal addresses from any text including emails
Data Validation · API key · HTTPS
US Street Address
Validate and append data for any US postal address
Data Validation · API key · HTTPS
NumValidate
Open Source phone number validation
Data Validation · No auth · HTTPS
Postman Echo
Test api server to receive and return value from HTTP method
Data Validation · No auth · HTTPS
invowerk
Validate e-invoices (ZUGFeRD, Factur-X, XRechnung, Peppol BIS) and get a validation report
Data Validation · API key · HTTPS
sthan.io Address Autocomplete
Real-time US address suggestions as users type
Data Validation · API key · HTTPS
sthan.io Address Parser
Parse freeform US addresses into structured fields (house number, street, unit, city, state, ZIP)
Data Validation · API key · HTTPS
sthan.io Address Verification
Validate and standardize US addresses, with ZIP+4 and deliverability status
Data Validation · API key · HTTPS
VerifNow
Validates email, phone, IBAN, EU VAT against VIES, and Canadian, Spanish and US national IDs
Data Validation · API key · HTTPS
RevAddress
US address standardization, congressional and state legislative districts, Census data; free tier
Data Validation · API key · HTTPS
SpryTools Email Validation
Syntax + MX + disposable/role-based email validation
Data Validation · API key · HTTPS
Lob.com
US Address Verification
Data Validation · API key · HTTPS
SchemaShield
Read-only preflight for breaking schema changes and downstream query impact
Data Validation · API key · HTTPS
VATlayer
VAT number validation
Data Validation · API key · HTTPS