Where in Brazil is telephone area code 85?

Brazilian area code +55 81 is in the state of Pernambuco, including Recife, Caruaru, and Fernando de Noronha.

(The plus sign means "insert your international access prefix here." From a GSM mobile phone, you can enter the number in full international format, starting with the plus sign. The most common prefix is 00, but North America (USA, Canada, etc.) uses 011, and many other countries use different prefixes.)