sensitive_pn: Add US number

* See: http://www.thehotline.org

Change-Id: Ia56567f1f5fdb82f4ec61e20fe644066f03b1cb7
diff --git a/prebuilt/common/etc/sensitive_pn.xml b/prebuilt/common/etc/sensitive_pn.xml
index 5bbb94b..b613124 100644
--- a/prebuilt/common/etc/sensitive_pn.xml
+++ b/prebuilt/common/etc/sensitive_pn.xml
@@ -46,6 +46,10 @@
     <sensitivePN network="268">
         <item>800202148</item>
     </sensitivePN>
+    <!--USA-->
+    <sensitivePN network="310">
+        <item>18007997233</item>
+    </sensitivePN>
     <!--Australia-->
     <sensitivePN network="505">
         <item>1800737732</item>