diff --git a/incoming.php b/incoming.php
index 12c36b1..5bd4d54 100755
--- a/incoming.php
+++ b/incoming.php
@@ -85,3 +85,10 @@ if ($clientId) {
 		Agi::exec("SET VARIABLE ARG4 \"{$client->notificationEmail}\"");
 	}
 }
+
+// Checks if phone number is on the blacklist
+
+if ($db->getValue('SELECT COUNT(*) > 0 FROM blacklist WHERE phone = #', [$callerId])) {
+	Agi::exec('HANGUP');
+	exit;
+}