Create your free 1Lookup account
Validate and verify data at scale
Verify phones, emails, and IPs before they hit your CRM.
Trusted by data-driven companies
Verified
“Saved us from hundreds of spam signups. We run a SaaS product with free trials and were getting flooded with bots and fake users. After integrating 1Lookup, the difference was night and day. It quietly filters out junk signups without blocking legitimate customers.”
Ido
SaaS Founder, US
Verified
“Solid phone validation API. Setup was simple and results have been consistent. It is not overloaded with features. Just fast, accurate, and reliable.”
Dirk
Product Engineer, US
Verified
“Good tool, no fluff. We verify leads before pushing them into our CRM and it just works. Support actually responds when you reach out.”
Brian
Growth Manager, US
Why companies trust
1lookup
Accuracy sourced from FCC and carrier data
Real-time API responses < 100ms
Batch process millions of records
Detailed analytics & reporting
SSL Encrypted
24/7 Support
Always Available