I-797B to L1A-port of entry notified?

Dh rec'd his I-797B. On it, it says the Port of Entry has been notified and that we have to notify the lawyer and a form submitted in order to change the POE. The problem is, the HR manager didn't ask dh which POE, we live in an area where there are several POEs within driving distance, and we have no idea which one she put. Is there any way to find out quickly? We wanted to get this done this weekend.

Doesn't matter. Any POE will accept your entry.