I`m wondering if theres a way of blocking IP ranges at server level instead of account level?

I know it can be done via cpanel/.htaccess, but I`ve 2 ranges that I don`t want to access one of my servers.

TIA

Using IPTables it's ...

/sbin/iptables -I INPUT -s [ipaddress] -j DROP

If you have APF installed it's ...
/etc/apf/apf -d [ipaddress]

About the ip to insert in the iptables rule :

xxx.xxx.xxx.xxx : blocks Single ip

xxx.0.0.0/8

xxx.xxx.0.0/16

xxx.xxx.xxx.0/24