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I found myself needing to make roughly 100 DNS records for a DHCP pool. In BIND I usually accomplish this with some fancy vi(1) work, but sadly this was for a Windows based lab at work.
Thanks to Powershell, it wasn't too difficult.
Essentially you use ForEach to iterate over a range (i..j counts from i to j, i...j counts through by subtracting i from j or something silly like that) and then construct your DNS parameters from there.
Here is the script:
ForEach ($num in 50..149) {
dnscmd.exe /RecordAdd rochlab.com "dhcp-$num.rochlab.com;" /CreatePTR A 192.168.20.$num
}