i just came to learn that my public ip address through whatsmyip

Code:

46.126.40.51

since its class A IP address so default subnet mask is

Code:

46.126.40.51/8  ie 255.0.0.0

does that means apart from from 46.0.0.0 and 46.255.255.255. i can use all the rest for host. And i believe its possible within one network

And when some one bought a class A static IP address for personal use. does that means i can have around 16777214 host within a single network.