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Validation

Validate a single phone number

Validates a phone number and returns detailed information including whether it's valid, reachable (active/alive), carrier information, and the caller ID name associated with the number.

<span>⚡ <strong>Rate limit:</strong> 60 requests per 1 minute</span>

<span>💰 <strong>Cost:</strong> 3 credits per phone validation <span title="Pricing shown is default pricing. Actual pricing may vary.">ⓘ</span></span>

<span>⏱ <strong>Recommended timeout:</strong> 1 minute <span title="Recommended timeout: set your HTTP client timeout to at least 1 minute for this endpoint.">ⓘ</span></span>

post/v1/validate-phone/single

Request body

apiKeystring required

Your Fiber API key

phoneNumberstring required

Phone number to validate. E.164 (e.g. +14155551234) is recommended; other formats with spaces, dashes, or parentheses are accepted.

patience'MINIMUM' | 'LOW' | 'MEDIUM' | 'HIGH' | 'EXTREME' | 'MAXIMUM' | 'null' nullable

How long to wait for phone-number verification after a number is found. Higher patience increases average response time but improves identity and reachability accuracy. MINIMUM is the least thorough verification option.

Response

Default Response

advicestring[] nullable

Tips, recommendations, and suggestions for using this API effectively.

Changes