اسلام عليكم ورحمة الله وبركاته ‎ How can on go about being interested in a sister for marriage, when he does not have knowledge of who her family is, nor does he have muslim family that can approach her on his behalf. Would it be permissible to ask her for her fathers number or something like that?

Ustadh AbdulAziz al-Haqqan

Yes and nothing else, then he speaks to her father and visits them if they allow him