diff --git a/fn/dns.php b/fn/dns.php
index 5fe839f..b0deb2c 100644
--- a/fn/dns.php
+++ b/fn/dns.php
@@ -41,8 +41,6 @@ function knotcZoneExec($zone, $cmd) {
 }
 
 function checkIpFormat($ip) {
-	if (!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_RES_RANGE))
-		userError("IP address is on the reserved range.");
 	if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4))
 		return "A";
 	if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6))