> ## Documentation Index
> Fetch the complete documentation index at: https://developers.telnyx.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Telnyx Number Lookup API

> Use the Telnyx Number Lookup API to retrieve carrier, line type, and portability data for any phone number worldwide before routing or messaging.

Our Number lookup API allows users to lookup phone number data, which optionally includes caller name and carrier information.