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Is a /48 still the smallest thing you can route independently?

Jo Rhett wrote:
> I've finally convinced $DAYJOB to deploy IPv6.  Justification for the
> IP space is easy, however the truth is that a /64 is more than we need
> in all locations. However the last I heard was that you can't
> effectively announce anything smaller than a /48.  Is this still true?
> Is this likely to change in the immediate future, or do I need to ask
> for a /44?

/48 is the new /24