IRC server downtime

[Xifanie]

I'd like to apologize for the server downtime which start 2 hours ago. While trying to get the support to fix the issue, I found out the company shouldn't even be hosting IRCD, and sadly, we have to backup everything and move to a new server.

Toshiko & I are working our asses off to move everything to a new server, so please hang in there. It will still be on irc.ffhacktics.com, don't worry.

*** Processing connection to il.us.irc.xzibition.com
*** Looking up your hostname...
*** Checking Ident
*** Got Ident response
*** Found your hostname
[ http://www.xzibition.com ] Please open a ticket via support@xzibition.com for support. - Ask question in here and wait for an @ please or open a ticket.
Topic set by layzkat!layz@admin.xzibition on Mon Jul 15 2013 05:49:11 GMT-0400 (EDT)
<ChanServ>: Welcome to our support channel, Xifanie.
<ChanServ>: We will never ask you for your shell or bnc passwords. Never give out your passwords.
<ChanServ>: Please state your problem in the channel and wait for an OP(@) to assist you.
<Xifanie>: I have my server irc.ffhacktics.com running on nova... No IRC clients can connect to nova, yet the server is running. Why?
<layzkat>: your IP looks nulled by the datacenter
<layzkat>: did it just get nulled?
<Xifanie>: about 20min ago
<layzkat>: they usually auto unnull unless the attack was bad
<layzkat>: I will check your IP and email them in a couple hours if its still nulled
<Xifanie>: Well, 45min and obviously not coming back up. Not even 2 months and I can't say I'm pleased with my experience with xzibition so far.
<bryan>: We don't control the nulling.
<bryan>: Our upstream provider does.
<Xifanie>: What's the big deal about contacting them? They're going to bite? I can't believe I'll have to wait HOURS
<bryan>: if we request it be unnulled, and the attack is still ongoing, there is a good chance they'll null it for 24-48+ hours
<Xifanie>: what is the attack?

[formerdeathcorps]

Attack?  What was attacked, exactly, Nova or irc.ffhacktics.com?  How exactly would nulling Xif's IP help block the attack?