Data Validation APIs Collection

API Docs
US Autocomplete

US Autocomplete

https

Enter address data quickly with real-time address suggestions

freemium
apiKey
Data Validation
API Docs
US Extract

US Extract

https

Extract postal addresses from any text including emails

freemium
apiKey
Data Validation
API Docs
US Street Address

US Street Address

https

Validate and append data for any US postal address

freemium
apiKey
Data Validation
API Docs
streetlayer

streetlayer

https

Street address info and validation

free
apiKey
Data Validation
API Docs
Cloudmersive Validate

Cloudmersive Validate

https

Valide email addresses, phone numbers, VAT numbers, and domain names

freemium
apiKey
Data Validation
API Docs
Numverify

Numverify

https

Global Phone Number Validation & Lookup JSON API Real-time REST API supporting 232 countries

freemium
apiKey
Data Validation
API Docs
PurgoMalum

PurgoMalum

https

Content validator against profanity & obscenity

free
Public
Data Validation
API Docs
Lob.com

Lob.com

https

Global address verification APIs to keep your customer database accurate and ensure that your products and mail reach the right person every time.

freemium
apiKey
Data Validation
API Docs
languagelayer API

languagelayer API

https

Powerful Language Detection JSON API for Developers Simple REST API supporting 173 languages

freemium
apiKey
Data Validation
API Docs
vatlayer API

vatlayer API

https

Free, Instant VAT Number Validation & EU VAT Rates API HTTPS Secured JSON API for Developers & Businesses

freemium
apiKey
Data Validation
API Docs
mailboxlayer API

mailboxlayer API

https

Email Validation & Verification JSON API for Developers Simple REST API measuring email deliverability & quality

freemium
apiKey
Data Validation