Telegraph article on RIP

[James Firth]

Ian Batten wrote:
> 
> Disagree.   In the past, reverse DQ was done on a nod and a wink basis
> between what you would calls bods in councils / large companies / law
> enforcement / spooks and what you would call bods in BT / GPO.  

>From what I remember from around 1990 onwards reverse DQ, for listed numbers
at least, was done using a widely-available hack and a version of the
national telephone directory available on CD-ROM!