Many users here don't want anything to do with debt collection calls from Navient, so they want to find and block all phone numbers that belong to Navient's debt collections department.

So what are all of their debt collections numbers? Is there a master list anywhere that most comprehensively shares all their debt collection numbers? Or should we make that list here?

Thanks in advance. This list we'll make will help debtors block calls from them before they even start calling them.