Postal Service Package Invalid Address Return?

I shipped a package via USPS Parcel Post and it didn't arrive to it's destination because of an invalid address. It has been about a month since and I haven't received it back. I have $100 insurance on it. What should I do? I have the tracking the number, but it doesn't report any information on it from the USPS website's track and confirm.Postal Service Package Invalid Address Return?
No offense, but your first mistake was to ship via Parcel Post. If I ship ANYTHING via the USPS it's by Priority Mail. They're tracking system has advanced lightyears from what it used to be, and management is now ensuring that packages are scanned often. Parcel Post is the cheapest way to ship something, and as far as I'm concerned, you get what you pay for!Postal Service Package Invalid Address Return?
Take your tracking number and the receipt where you paid for it to the Post Office and tell them it never arrived at its destination. If the address was invalid, they probably will not refund your money.Postal Service Package Invalid Address Return?
Basically USPS are still looking into it, cause you might of entered the wrong address and postal code, but if there's a return address on the package it will be sent back to you. Contact them. Since it has been a month.
Insurance numbers cannot be looked up online. Only the post office can look that up. I would go ahead and initiate your insurance claim.