About 1Lookup
1Lookup provides a unified API for contact validation, enrichment, intelligence, and fraud detection. Businesses can verify phone numbers, email addresses, IP addresses, and domains using real-time data, while keeping all services under one API key and shared credit balance. 1Lookup
Its phone intelligence tools can identify carrier and line type, check porting and Do Not Call status, and generate fraud-risk scores. Email validation checks syntax, MX records, SMTP availability, disposable addresses, and other deliverability signals. IP intelligence can detect VPNs, proxies, Tor nodes, hosting providers, and geographic information. 1Lookup
1Lookup also provides reverse phone and email lookups, contact enrichment, mobile-number finding, B2B prospecting, and domain intelligence. For example, its enrichment tools can find a work email from a person's name and company domain, while its Mobile Finder can use a professional profile URL or email to locate a mobile number when available. 1Lookup
The platform is built for sales teams, recruiters, developers, fraud-prevention systems, AI agents, and businesses handling large contact databases. It also provides an MCP server that allows compatible AI agents to validate phones, emails, and IP addresses directly during automated workflows.
Pricing
$99/month
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