When defining the rule, you can enter a single IP address or a range of IP addresses.

When creating a rule to block a large range of IP addresses, if you’re finding that you’re having to add a lot of addresses to get the coverage you need. It might be advantageous to explore the reason so many exclusions are being made.

And whether a rule for blocking a country, rather than a ranges of IP address better suits your needs. For more details refer to How to I block IP addresses by country? Blocking a country will block the entire country, no exceptions allowed.

How to apply the rule globally

1. From the top navigation, click Professional Services.
2. Click Rules.
3. Click the Add New Global Rule
4. Click Block IP Addresses - Custom.
5. Enter the single public IP Address or the range of public IP Addresses you’d like to block. When entering an IP address range, it must be entered as X.X.X.X - X.X.X.X.
6. Click Apply. If after applying the IP addresses to the rule, you’ve found one that is incorrect or shouldn’t have been included. You can remove the address in question.
   
   1. To remove: Click the trash can next to the IP address.
7. Repeat steps 6 & 7 for each IP address or range to be included in the rule.
8. Once all IP address have been added and confirmed as correct, click Add Rule.