1Lookup

1Lookup combines phone, email, IP, B2B, social, SEO, and other data tools into one API with a shared credit balance. You can verify contacts in real time with sub-300ms validation, fraud risk scoring, and phone data refreshed daily from FCC and carrier sources. It also lets you enrich contacts, find B2B prospects, check company and SEO data, and connect 1Lookup to AI agents through MCP. View startup