A Google Business Help forum thread has a complaint from a local business owner that says Google has reverted the area code of his phone number on his Google+ Local listing.

Here is a picture of his listing:

The issue is that Google is replacing the area code by removing the 0 and adding a 1. He said:

Clearly this can be an issue for consumers looking to call the store from their phones.

Google is aware of the issue.

Jade Wang from Google said:

Forum discussion at Google Business Help.