> ## 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.

# Account Signup

> Understand the trust and safety checks applied to every Telnyx signup attempt.

Every signup attempt is subjected to a battery of trust and safety checks. Among them, in no particular order, are the following:

* Domain age
* Domain reputation
* Host reputation
* IP reputation
* Signup origin
* reCAPTCHA verification

An attempt will be unsuccessful if **any** of the above fails.

Some attempts may also be subjected to additional requirements, including:

* Successfully validating a legitimate mobile number
* Successfully passing Know Your Customer (KYC) documentation verification

Telnyx constantly adjusts the logic, sequence, and thresholds to combat signup abuse and fraudulent usage of the platform.