A phone number on a van or a shop window is one of the few pieces of text in a round that is unambiguous about where you are, and a country's codes are learnable in about an evening. These trainers drill the mapping in the direction you need it under time pressure: from the number to the region, not the other way round.
8 games, free and without an account, playable in the browser.

Can you guess the Brazilian dialing codes for each state?

Can you place all 36 South African dialing codes on the map?

How well do you know the Spanish dialing codes?

Which of the five French dialing zones does a number belong to?

Can you place all 49 Polish area codes on the map?

Can you tell which part of Mexico a dialing code comes from?

How well do you know the United States dialing codes?

Can you match every Canadian area code to its province?
Every game here is also in the full catalogue, which is the same list without a cut taken out of it.