Most of the casinos spells out whether KYC is need or not in their terms
However if they find something suspicious with the IP they will surely ask for KYC
Request everyone to read through the terms carefully so as not to loose out at the time of withdrawal
Everything would really be listed or would be put up into their terms and conditions and this is why it would be always recommended that you should be reading up TOS
whenever you are playing into something new platform because problems and issues would be raised up or could happen if you do violate something on which it is normal
that they would be getting or locking those funds or account if they've seen that you had violated something.