He is the biological father of the child but may not consider as legally. Hence, your child may not inherit his estate in future unless your child is stated as the beneficiary in the will or as nominee of his cpf monies. You may want to check with lawyer or MUIS(for Muslim)
im in same situation as you. if not married, cant put his name in. only your name and details will be included. baby will take your race also. for address, will follow your NRIC address for baby. basically, everything for baby will follow yours. hope this helps
Who registered the birth? If you’re registering, put your address
Under yours. I am in the same situation as you
Under urs
Anonymous