CheckThatPhone
FreemiumLiveLast verified 24 Sept 2026
Validates US/Canada phone numbers with carrier lookup, geolocation and TCPA litigator screening.
Example request
curl --request POST --url 'https://api.checkthatphone.com/v1/lookup' --header 'Authorization: Bearer $API_KEY' --header 'Content-Type: application/json' --data '{"phone":"8182925409"}'Free tier, in plain English
500 free lookups a month with a hard cap, then pay-as-you-go from about $0.001/call at volume.
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