Hosts are recognized normally in this format:

nick!user@host

For example you have use apache, who's full host looks like this,

apache!lolcano@bas11-toronto12-1088917160.dsl.bell.ca

When using a host for a ban, or something that uses a host in the command, *'s serve as wild cards, so for example if you wanted to ban user apache from your room you could do it in these ways:

• /mode +bqIe apache!*@* (Nick based)
• /mode +bqIe *!lolcano@* (user based)
• /mode +bqIe *!*@bas11-toronto12-1088917160.dsl.bell.ca (Host based)

Other ways to do this would be:

• /mode +bqIe apache!*@*.dsl.bell.ca
• /mode +bqIe *a*!*l*@*.ca

modes such as:

• /mode +bqIe apache!*@*.dsl.bell.ca

are more effective then nick, user, and host based modes.