prefix aggregation

[Bernard.Tuy () urec fr (Bernard TUY)]

        Hi,

        In many places yet we're discussing prefix aggregation for at least
        193/8, 194/8 and 195/8 IP blocks.

        I was told since a while that some US carriers -such as SprintLink- 
        have decided to filter (id. no more route) prefixes longer than /19.

        My questions is :

          - is this impleted yet ?
          - if yes, who does it, for which class(es) of prefixes of which length ?
          - if no, when do you intend to have this filtering operational ?

        As I'm acting as a "consultant" for the french academic network (Renater)
        I'm interesting in knowing what policy every ISP -specially in the US 
        of A- intend to implement in the near future. 

  Thanks for your help and time,

  Regards,

  +Bernard Tuy.
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