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Blocking digits in a subnet

We have Notes 6.01. In the configuration document under SMTP Inbound controls, in the section titled Inbound connection controls, there is a subsection with the text "Deny connections from the following SMTP Internet hostnames/IP addresses:..We try to block IP addresses in the following format (e.g., []). The help text indicates you can use an asterisk (*) as a wildcard character.

My question is this: If I want to block a range of single digits in a subnet, do I only use a single digit or will that block all IP address in that subnet?

The same question extends to two and three digits in a subnet. Will two asterisks only block two-digit addresses, or will it block everything? How exactly do you block a range of one-digit addresses, or can this not be done at all? Two-digit addresses? Three-digit addresses? What format would I use to block an entire class A IP block? Class B? Class C?
The asterisk applies to everything to the left, not single digits.

Dig Deeper on Domino Resources - Part 2

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