How can I see a list of faxes received or sent by a specific number?

You can create custom list views on Sent Fax and Received Fax tabs that show faxes sent by or received by a certain fax number. For example, one list view on Sent Fax tab has criteria, Organization Fax Number = 4153425455 as one condition and add another listview to show faxes where Organization Fax Number = 5557324232.