There is an online telephone directory to help you find residential numbers. It's in Turkish, so you will need to know a few words.
Soyadı: Last Name
Adı: First Name
İl: Province (also the area code)
Semt: Neighborhood (if you know it)
You must use Turkish characters if the name, province, or neighborhood requires it. If Turkish alphabetical letters are not on your keyboard, open a Microsoft Word document. Click "Insert," then "Symbol" on the top menu. You'll then see lots of various alphabetical characters, including those used in Turkish. Insert those characters into a Word document, then copy and paste them into the appropriate form fields.
Turk Telekom Online Telephone Directory: In Turkish.