Global Location Number

All,

We are using SAP ECC 6.0

I am trying to find out where I can assign a Global Location Number to our company or Plant.

I understand I can assign the GLN for our Vendors in the Vendor Master , Control data section (Loc1, Loc2, check digit)

I also understand I can assign the GLN for our Customers in the Customer Master , Control data section (Loc1, Loc2, check digit)

I am just not sure how or where I can assign our own GLN to our company and plants

Any help would be appreciated?

Also, are we on the right version for the GLN functionality?

Thanks