Hi RC,

Yes, there is a way to add area codes to phone numbers that are missing them in Excel. Here's how you can do it:

1. Insert a new column next to the column containing the phone numbers.
2. In the first cell of the new column, enter the area code you want to add.
3. Select the entire column containing the phone numbers (including the header).
4. Click on "Home" tab in the ribbon, then click on "Find & Select" and select "Replace" from the dropdown menu.
5. In the "Find what" field, enter a single space (press the spacebar once).
6. In the "Replace with" field, enter a space followed by the area code you entered in step 2 (e.g. " 123").
7. Click on "Replace All" to replace all spaces with the area code in the selected column.
8. You should now have all phone numbers with the area code added, but some may have two area codes. To fix this, select the entire column again and repeat steps 4-7, but this time search for two spaces and replace with a single space followed by the area code.

That's it! You should now have all phone numbers with the area code added, without having to manually edit each cell. Let me know if you have any questions or if there's anything else I can help you with.

Best regards,
[Your Name]