I saw a printed chart of them in a payphone in Brazil (which seems genuinely useful if the reader knows how to distinguish, for example, which police force to c

I saw a printed chart of them in a payphone in Brazil (which seems genuinely useful if the reader knows how to distinguish, for example, which police force to contact in an emergency), but payphones are also becoming rarer in Brazil and I'm not sure that the list of these numbers is ubiquitous.