fix error when scanning range outside allocated subnets

pyscaniptonetbox.py

@@ -114,16 +114,18 @@ for p in prefixes:
 
 if is_subnet:
     print("OK - found (active) prefix " + supernet.exploded +  " that contains this range")
+    strprefixlen = str(supernet.prefixlen)
     prefix_is_writable = True
 else:
     print("No suitable (active) prefix found for " + tenant_name + " which contains subnet " + scan_net.exploded)
+    strprefixlen = str(scan_net.prefixlen)
     prefix_is_writable = False  ;#we'll do the scan - but won't write to netbox
     #note that netbox will not stop us writing to a non-Active prefix unless the token is locked down with complex rules
     #sys.exit(2)
 
 
 if prefix_is_writable:
-    answer = input("network " +  scan_net.exploded + "  Type 'n' to cancel,  'y' to scan only, 'update' to scan and enter IPs into netbox  (n/y/update)")
+    answer = input("network " +  supernet.exploded + "  Type 'n' to cancel,  'y' to scan only, 'update' to scan and enter IPs into netbox  (n/y/update)")
 else:
     answer = input("network " +  scan_net.exploded + "  Type 'n' to cancel,  'y' to scan only  (n/y)")
 
@@ -144,8 +146,6 @@ if do_scan:
     scanner.run()
     for i in scanner.list_of_hosts_found:
         print(i)
-        #print(str(supernet.prefixlen))
-        strprefixlen = str(supernet.prefixlen)
         if prefix_is_writable & do_update:
             try:
                 result = nb.ipam.ip_addresses.create(