You can, but then you discover that places like Bangladesh and Cambodia, that do a fair bit of freelance work on the 'net use a surprisingly tiny number of IPv4 addresses to do it.
For lots of these countries their total allocation of IPv4 addresses is < 20 per 1000 people and the nature of their access (through glorified internet cafes) mean that you will have some IP addresses that really are totally legit, yet have LOTS of users.
One size fits all is very dangerous on the Internet.
For lots of these countries their total allocation of IPv4 addresses is < 20 per 1000 people and the nature of their access (through glorified internet cafes) mean that you will have some IP addresses that really are totally legit, yet have LOTS of users.
One size fits all is very dangerous on the Internet.