The Global Location Number (GLN) is part of the GS1 systems of standards.
[2] The GS1 Identification Key is used to identify physical locations or legal entities.
The key comprises a GS1 Company Prefix, Location Reference, and Check Digit.
The GLN is used in electronic messaging between customers and suppliers, where location advice is important.
[6] Both the GLN and International Article Number also known as European Article Number or EAN share a common structure made of a 12-digit GS1 Company Prefix and Unique identifier followed by a 1-digit GS1 Check Digit.