In cryptographic parlance, “XX” often denotes an or a placeholder for a location that the author wishes to keep hidden. In the context of a physical address, it could imply:
Maya was the sort of person who loved puzzles. She spent evenings on a small table in her apartment, surrounded by coffee mugs and a battered notebook full of half‑finished riddles. When she saw “Missax170515,” she recognized the pattern: “Missax” was an old username she’d seen on a defunct forum about abandoned places, and “170515” could be a date—May 15, 2017. The rest of the string seemed to split naturally: “LanA‑Rhoades‑406‑MulberryRd‑XX.” missax170515lanarhoades406mulberryrdxx link