IP? IP if i am not wrong means Internet Protocol (address). First of all, i suppose you mean ID. Secondly, this is not an official armor developed by NCSoft, so that means that it is custom. In other words, the ID of custom items can only be determined by opening the itemname-e.dat of your server and searching. If you don't know how, this is not the correct place to ask. Go to the l2j dev section, or use the search button.
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Reason: Inaccurate - Wrong Section
Take a look on the sections next time, there is a general help section and a l2j dev help section.