[region] => California, UNITED STATES
                [resource_uri] => /v1/Account/XXXXXXXXXXXX/Number/2222222222/
                [sms_enabled] => 1
                [sms_rate] => 0.00000
                [sub_account] => 
                [type] => local
                [voice_enabled] => 1
                [voice_rate] => 0.00850
            )
        )
    )
)
*/
# Get a particular number
$params = array('number' => '1111111111');
$response = $p->get_number($params);
print_r($response);
/*
Sample Output
(
    [status] => 200
    [response] => Array
    (
        [active] => 1
        [added_on] => 2014-12-04
        [alias] => 
        [api_id] => 225d65e0-b689-11e4-9107-22000afaaa90
        [application] => 
        [carrier] => Plivo
        [monthly_rental_rate] => 0.80000
        [number] => 1111111111