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Have questions about our data validation APIs? Need help with integration? Our team is here to help you succeed.
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34 N Franklin Ave
Pinedale, WY 82941
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Frequently Asked Questions
Quick answers to common questions
How accurate are your validation results?
Our phone and email validation accuracy comes from data sourced directly from carrier networks and authoritative databases, refreshed daily.
Do you offer API documentation?
Yes! We have API documentation with code examples in multiple languages available at app.1lookup.io/api
What is your pricing model?
We use simple credit-based pricing with no setup fees or monthly minimums. Start with a 7-day free trial, then pay as you grow.
Can I run checks in real time inside my forms?
Yes. Phone, email and IP checks are single synchronous API calls, so you can run them inline in a signup or checkout form. Standard checks are limited to 200 requests per 10 seconds for each API key, and each account can make up to 1,000 requests a minute in total across all its keys.
Still have questions? We'd love to help!