diff --git a/app/dialplan_outbound/dialplan_outbound_add.php b/app/dialplan_outbound/dialplan_outbound_add.php
index 7a9c4a48e1..02c2d184be 100644
--- a/app/dialplan_outbound/dialplan_outbound_add.php
+++ b/app/dialplan_outbound/dialplan_outbound_add.php
@@ -207,7 +207,7 @@ else {
 						$label = $text['label-11d'];
 						$abbrv = "11d";
 						break;
-					case "^\+?1?(\d{10})$":
+					case "^(?:\+1|1)?([2-9]\d\d[2-9]\d{6})$":
 						$label = $text['label-north-america'];
 						$abbrv = "10-11d";
 						break;