[Exim] does a net-*-dbm exist?

Hi,

I have few hostlists which get their data out of
dmb-files where the addresses are stored in the
familliar network/masklen format.

For this purpose my hostlists look like this:
        hostlist xxx = net-dbm;FILE : \
                net32-dbm;FILE : net31-dbm;FILE : \
                (...)
                net9-dbm;FILE : net8-dbm;FILE

which searches for the keys 1.2.3.4, 1.2.3.4/32, 1.2.3.4/31,
1.2.3.0/30, 1.2.3.0/29, 1.2.3.0/28... and so on.

Is there some shorthand for specifying every single mask
which I have failed to find in the documenation/faq so I
could just write "net(whatever)dbm;FILE" ?

        Chris