A Dutch company called Postnl has receipts they give out and they use this font that I want to use for my receipts too. 

These kind of fonts are usually not TTF/OTF fonts you can install on your computer, but bitmap/dot matrix fonts native to the device the receipts are created with. 

You could use the search term “dot matrix” to find vector fonts that emulate this look. 

What Ralf said. From what I can find PostNL uses Zebra thermal printers. Most likely ZD220D or GK420D. So these fonts are part of the device firmware.