The ipscan.txt file contains IP address range entries that need to be scanned.

Entry format:
O.O.O.O;
O.O.O.O-O;
O.O.O-O.O-O;
O.O.O.O-O.O.O.O;
O.O.O.O/M;
where O is an octet (0-255), M is the network mask (0-32).

Example:
192.168.0.1;
192.168.1.1-255;
10.0.1-255.1-255;
192.168.2.1-192.168.3.255;
192.168.4.0/24;
#192.168.5.1;
#192.168.6-7.1-255;

Ranges marked with the "#" symbol are excluded from scanning.

Scanning is performed first using the IP address database (the ip.txt file), and then by ranges. When scanning ranges, the IP address database is updated.