Looking for friend Yasuyo

Looking for good friend whose name is Yasuyo Murakami - based in Osaka. She studied at Concordia University (Montreal) with me and I haven't heard from her since 2001. I had her address and phone number but I tried calling and the operator told me the number is no longer valid and the address is no good either. She comes from a family of 4 girls, one of the sisters name is Yoshi and studied in Hawaii. Her dad has a business (not sure what) and her mum recently passed away. I would really like to know where she is now, she used to live in Osaka but apparently, could have moved. Anyone who could at least maybe give me a website where I could search for her telephone number? That would be greatly appreciated.

Why don't you repost this here at the Japan People Search Forum where you should be able to find specific and detailed information on Japanese phone directories. Although I doubt very much they are either country-wide or online....

https://jref.com/forum/forumdisplay.php?s=&forumid=23

Welcome to the forum. I moved your thread to the Japan People Search section. Good luck with your search!