It is ufone. Because onic sim is beings registered on Ufone network. And there is no merger of ufone and telenor as of now. Before commencing any thing they need to inform PTA, CCP and SECP etc. Before that they cannot perform any merger testing etc.
I asked customer representative is onic based on Ufone, he said we are independent company? I asked again of they have their own towers and network, he replied that he cannot provide me this information which means they are hiding that they are ufone and just wants to increase their number of users. So I cancelled my order.
And on playstore onic app is providing by same developer as ufone. What else remains to clarify?