My ipod touch cannot detect any wifi networks. I

my ipod touch cannot detect any wifi networks. I have a dlink dir-655 router. On the settings for the ipod, the wifi address is 00:22:41:60:75:0A. I am not sure what that means. I originally set up the touch in another city with another network and have moved 2 times since. I am confused why the ipod won't recognize any wifi network. Wifi is on, I have tried the restore network settings. ect. I am stuck, can someone help?