List of dialling codes in Brazil

Mobile numbers share the same geographic area codes as landlines, but the first digit differentiates them.

(There is an exception for some iDEN mobile lines operated by Nextel, which are eight digits long and start with 7 and disestablished in 2018.)

For international calls to Brazil, the international access code used in the calling country must be dialed (for example, 011 from the United States and Canada, 00 from Europe and most other countries, or the actual "+" sign from some mobile networks), then Brazil's country code 55, then the two-digit area code, then the local eight- or nine-digit number.

For example, to call the number 3333-3333 in Rio de Janeiro (area code 21) from Europe, one would dial 00 55 21 3333 3333.

In a few exceptional cases, some area codes span state borders to cater for tightly integrated interstate communities: