In computing, a blacklist is a basic access control mechanism that allows everyone access, except for the members of the black list (i.e. list of denied accesses). The opposite is a whitelist, which means allow nobody, except members of the white list.
Do you want to block unwanted vsitors from certain countries?
Try IP Blocker Firewall and import country IP lists.
We do not keep the up-to-date country IP addresses. It is better to directly download country IP address lists from I-Blocklist.