hi, all,  I have an index=myindex, and with two data sourcestype  sourcetype1 includes some IP subnet information just as below: Description  SubnetID      NetStart  NetEnd   NetBits NetMask Site other_fields 10.168.64.0 10.168.64.0/24 10.168.64.0  10.168.64.255 24 255.255.255.0     100.108.95.68 100.108.95.68/30 00.108.95.68 100.108.95.71 30 255.255.255.252     100.108.24.24  100.108.24.24/30  100.108.24.24  100.108.24.27 30 255.255.255.252       sourcetype2 provides the information about device, include IP address Device_Name  Mgmt_IP  Site other_fields my_device_1 100.108.65.75     my_device_4 100.108.95.70     my_device_10 10.168.64.68     I would like to find the unused IP addresses in every IP range at a specific site. Any information or guidance will be very appreciated! Thank you in advance!       ... View more