<p>Does anyone know of a simple way of getting the raw xml that is returned from querying a webservice?</p>

<p>I have seen a way of doing this via <a href="http://devlicio.us/blogs/billy_mccafferty/archive/2006/10/09/Examine-XML-of-Web-Service-Response.aspx" rel="noreferrer">Web Services Enhancements</a>, but I don't want an added dependency.</p>

I don't know if you have read these two questions, but they might help you a little.
Phone Number Columns in a Database
Is there a standard for storing normalized phone numbers in a database?
Perhaps it would be wise to store the type of number (landline, cell, fax) and/or the messages that can be received on it (voice, text, email). Note that in the US, it is also possible to send text messages to a phone via email, but I believe that is dependent on the carrier.