Retrieves the list of available domain extensions (TLDs) for the reseller group.
Reseller email address registered in WHMCS
HMAC-SHA256 authentication token.
PHP formula: base64_encode(hash_hmac('sha256', $apiKey, $email . ':' . gmdate('y-m-d H')))
Important: hash_hmac without the 3rd parameter true (returns hex, not binary), then base64_encode of the hex result. The token is 88 characters long.
An optional timestamp header (Unix timestamp, 60-second tolerance) can be sent to synchronize time.
"YTk4YjRmNjI..."
Success - Returns an array of available TLDs
[".com", ".net", ".org", ".fr"]