1LookUp

Stop bad data before it enters your system

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Lookup is one universal endpoint that validates phone numbers, emails, IP addresses, and domains — automatically detecting the type and returning enriched results in under 300ms. No stitching together multiple APIs. Just send a query and get back carrier data, MX records, geolocation, VPN detection, and more. Built for developers who can't afford bad data in their systems. Starts at $99/mo.

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