eters:</span><div class="item"><div class="floatbox code colorizedCode">cardNumber<span class="itemSeparator">:</span></div><div>The credit card number.</div></div></div></div><div class="boxedElem"><div class="contentHolder"><span class="title">Returns:</span><div class="item"><ul><li> Returns name of the provider; values can be <code><span class="codeString">"visa"</span></code>, <code><span class="codeString">"mastercard"</span></code>, <code><span class="codeString">"discover"</span></code>, <code><span