Clue | Source | Date |
---|---|---|
Feature in a telephone directory | New York Times | 03 Feb 2018 |
Feature in a telephone directory | ||
Telemarketing reference | Newsday | 13 Aug 2016 |
Graphic with three-digit numbers | LA Times Daily | 20 Jun 2015 |
Graphic with three-digit numbers | ||
Phone book feature | ||
Verizon reference |