| 2022-06-24 | Numbers that come after 1 |
| 2019-08-10 | Some demographic data |
| 2016-09-10 | Regional IDs |
| 2014-09-08 | Long-distance callers' necessities |
| 2014-07-11 | 409 and 410, but not 411 |
| 2013-09-27 | Prefixes featured on some maps |
| 2012-09-07 | New York City has six |
| 2009-05-06 | 307 for Wyoming and 907 for Alaska |
| 2002-03-23 | New York City has five |
| 2001-03-03 | 727 and others |
| 2000-12-03 | Many new numbers these days |
| 1999-08-14 | They're often found in parentheses |
| 1998-08-10 | Numbers usually in parentheses |
| 1995-09-15 | Long-distance needs |
| 1994-07-27 | Numbers in parentheses |