For a large number of servers in a given ip block, I frequently see people use the following notation which incorporates the ip address with the hostname:

ip-10.10.10.1.mydomain.com
ip-10.10.10.2.mydomain.com
...
ip-10.10.10.255.mydomain.com

Using this type of notation makes it easy to script the creation of your zone file. To generate the forward dns for this zone (mydomain.com), I would do the following:

for i in $(seq 1 255)
do
   echo "ip-10.10.10.$i        IN A      10.10.10.$i" >> db.mydomain.com
done

Conversely, to generate the 10.10.10.0.in-addr.arpa reverse zone do the following:

for i in $(seq 1 255)
do
   echo "$i             IN PTR    ip-10.10.10.$i.mydomain.com." >> 10.10.10.0.in-addr.arpa
done

This creates the sequence from 1 to 255. For each iteration, you generate a line using echo for the given value of $i. Each line is appended to your zone file.

I like to use tabs instead of spaces in between columns. To add tabs to the echo statement, you need to escape each tab with a control-v. If you want to add two tabs, hit ‘control-v’ followed by the tab key followed by another ‘control-v’ and another tab.

There are obviously many other ways to do this. You can use a for loop:

for ((i=1; i<=255; i++));