Roland Perry wrote:

I've never ever include ranges of numbers in the address, and cannot
conceive of any logic (except vanity) for their inclusion.

It's mainly for the convenience of people walking down the road looking
for No 144, and counting front doors. In some cases it'll be because a
site spread from (say) No 132 in both directions, and people with the old
address are helped by the new front door saying more than just "No 128".

It's also handy because sometimes overlapping sites try to maintain the
separate numbers as different addresses for different departments. This
invariably doesn't work and a range address can make it clear the place
hasn't moved.