Looking for other Phone APIs? Here are more free options in the same category:
CheckThatPhone — Real-time phone validation API for US & Canada: carrier and line type from live carrier data, portability, deliverability, GeoIP and TCPA litigator scrub
Fax for Agents — Fax API, hosted MCP server and SDKs built so AI agents can send and receive faxes, with a free sandbox
MobileAPI — Smartphone, tablet, and wearable device specifications
Numlookup — Phone number validation and carrier lookup API with global coverage