try fix

main.py

@@ -159,9 +159,9 @@ def start(args):
         for group in data:
             hosts, description = group
             for host in hosts:
-                if not host[0].isdigit():
+                try:
                     ipnet = socket.gethostbyname(host)
-                else:
+                except:
                     ipnet = host
 
                 ipnetwork = IPNetwork(ipnet)