<?php

$customerAddressID = '24'; // your customer address id
$customerID = '1';
$customer = Mage::getModel('customer/customer')->load($customerID);

$defaultBilling  = $customer->getDefaultBillingAddress();
$defaultShipping = $customer->getDefaultShippingAddress();

if ( ! $defaultBilling ) {
    $def_billing = 0;
} else {
    $def_billing = $defaultBilling->getData('entity_id');
}

if ( ! $defaultShipping ) {
    $def_shipping = 0;
} else {
    $def_shipping = $defaultShipping ->getData('entity_id');
}

if(($customerAddressID == $def_billing) || ($customerAddressID == $def_shipping))
{
    // your address is default billing or shipping address
}