Person in question:

kamenriderooo is ~henshin@TAKA.TORA.BATTA * TATOOOBA
kamenriderooo on @#ooo
kamenriderooo using *.rizon.net Where are you?
kamenriderooo has identified for this nick
kamenriderooo End of /WHOIS list.
-


Earlier today (Timestamp is in GMT+10):

[18-08-2011 - 00:50:18] * Hollander sets mode: +b *!*@TAKA.TORA.BATTA
...
[18-08-2011 - 00:50:28] * kamenriderooo was kicked by Hollander (f**k off till opiate gets here)


And then:

[18-08-2011 - 01:56:39] * hellooo (qwebirc@Rizon-43B284F.phlapa.fios.verizon.net) has joined #not4chan
...
[18-08-2011 - 01:56:57] * Hollander sets mode: +b *!*@Rizon-43B284F.phlapa.fios.verizon.net
...
[18-08-2011 - 01:57:03] * hellooo was kicked by Hollander (ban evasion)


I don't know if this counts as proof or not, but kamenriderooo without a vhost in previous months (the Rizon-[numbers] bit changes...):

[29-05-2011 - 21:36:16] kamenriderooo is ~gooo-on@Rizon-EE8A931.phlapa.fios.verizon.net
[29-06-2011 - 05:59:14] * kamenriderooo (~henshin@Rizon-E6057220.phlapa.fios.verizon.net)