Comcast ran into this were the 10.0.0.0/8 address range simply is not big enough to support all the devices they need.
A small network can easily get away with two or three small address ranges, and that's being generous.
You can typically plot this into an already in-use address range.
The fifth class (E) address range is reserved for future or experimental purposes.
Another type of private networking uses the link-local address range.
Assignments are taken from the address range and have a minimum size of a prefix.
Over time, the physical address range of the Q-bus was expanded from 16 to 18 and then 22 bits.
If the storage area does not start at 0, then a simple addition will convert this figure to the address range required.
There may be 255 stations per segment with an overall address range of 65536 communication ports.
An address range of 0xf412df divided into 0x12 parts is: