diff --git a/wireguard-install.sh b/wireguard-install.sh
index 5f3f8bb..1eb4263 100644
--- a/wireguard-install.sh
+++ b/wireguard-install.sh
@@ -239,6 +239,12 @@ function newClient() {
 		fi
 	done
 
+	if [[ ${DOT_EXISTS} == '1' ]]; then
+		echo ""
+		echo "The subnet configured supports only 253 clients."
+		exit 1
+	fi
+
 	until [[ "${IPV4_EXISTS}" == '0' ]]; do
 		read -rp "Client's WireGuard IPv4: ${SERVER_WG_IPV4::-1}" -e -i "${DOT_IP}" DOT_IP
 		CLIENT_WG_IPV4="${SERVER_WG_IPV4::-1}${DOT_IP}"