Yes, I thought of that, too. Texts from Last Night does organize its texts by area code. While the Anon would undoubtedly find texts from their area code, they would not be able to find which posts they correspond with because the only way to search for texts on DLFLN or DGFLN is by character.
(Did that make any sense?)
We can try to do that for future posts. At this point (876 posts for DLFLN and 209 for DGFLN), updating the tags for each post would be a bit too time consuming for us to manage.
I do have each post saved by character and area code on my computer, however, so if you are really truly burning with an all-consuming curiosity, you can message me your area code and a character and I can let you know if we have any posts that match. No guarantees, though.