Objective: Generate IP Addresses in a specific subnet. Example shortened to 32 records for brevity. Usage: Edit loop to taste.

Results:

192.168.0.1		PTR .domain.com
192.168.0.2		PTR .domain.com
192.168.0.3		PTR .domain.com
192.168.0.4		PTR .domain.com
192.168.0.5		PTR .domain.com
192.168.0.6		PTR .domain.com
192.168.0.7		PTR .domain.com
192.168.0.8		PTR .domain.com
192.168.0.9		PTR .domain.com
192.168.0.10		PTR .domain.com
192.168.0.11		PTR .domain.com
192.168.0.12		PTR .domain.com
192.168.0.13		PTR .domain.com
192.168.0.14		PTR .domain.com
192.168.0.15		PTR .domain.com
192.168.0.16		PTR .domain.com
192.168.0.17		PTR .domain.com
192.168.0.18		PTR .domain.com
192.168.0.19		PTR .domain.com
192.168.0.20		PTR .domain.com
192.168.0.21		PTR .domain.com
192.168.0.22		PTR .domain.com
192.168.0.23		PTR .domain.com
192.168.0.24		PTR .domain.com
192.168.0.25		PTR .domain.com
192.168.0.26		PTR .domain.com
192.168.0.27		PTR .domain.com
192.168.0.28		PTR .domain.com
192.168.0.29		PTR .domain.com
192.168.0.30		PTR .domain.com
192.168.0.31		PTR .domain.com
192.168.0.32		PTR .domain.com