CALLERID
| Date | Clue |
|---|---|
| 2022-12-07 | It might say "Scam Likely" |
| 2020-10-25 | Spam filter, of a sort |
| 2016-09-21 | Phone screening service |
| 2011-01-03 | Phone-screening service |
| 2010-12-08 | Screening aid |
| 2007-10-28 | Number revealer |
| 2005-11-24 | Modern means of character recognition? |
| 2003-07-31 | It fingers ringers |
| 2001-10-07 | Something checked before answering |
| 1997-11-08 | Bell Atlantic service |
| 1997-04-19 | Telephone option |