HELP in DNS Setup

[hoi]

hi everyone,

pls help!
i am using linux to setup a DNS for my domain,
however, the ISP give only 32 IP address to me,
then in the named.boot file,
is that correct to setup like this:

primary    myweb.com    myweb.com.file
primary    1.168.192.in-addr.arpa    myweb.com.file.rev

correct?
if my IP address range is from 192.168.1.193-192.168.1.222

since the subnet mask is not 255.255.255.0,
i just feel confused!
pls help if u know it!
thanks
best regard