I can't speak for Matthew, but many smallish ISPs have legacy /24
allocations from using Livingston Portmasters and IRXes before they
could do CIDR (I *think* they solved that problem, but I don't know
for sure).
-george
If that's the case, it's understandable. We had devil of a time trying to
get longer than /24s to work with cheap equipment some high schools
bought to do their internal networks.
Legacy equipment not being able to do that is something you can't do
anything about, but it's time vendors learned what CIDR is...
-dorian