IBM released their IBM system/360 line around the same time ASCII was being standardized in the early 1960s.
IBM therefore developed their own EBCDIC (Extended Binary Coded Decimal Interchange Code) for use with punch card peripherals, and still uses it on mainframes today.
It is probably the next most well known character set due to the proliferation of IBM midrange and mainframes.
There are a handful of different EBCDIC Code Pages and similar to ASCII, the first few characters are Non-Printable Here is the set of codes employed in all IBM System/360 machines.