Problem SIM network unlock NCK


I bought a P9 lite phone from Vodafone to extend the subscription, we have Orange and DIGI cards, is the phone blocked in Vodafone? I inserted the cards, SIM network unlock NCK (10 retries left) appears, I don't know what this is, is it the PIN code of the card? I don't use anything like that and I don't know the PIN code, I entered 0000 and 1234 but nothing.