Where is area code 954 in Spain?

Answer 1

Spain no longer has telephone area codes, per se. You must dial the entire 9-digit number for all calls within Spain, and the number in international format is simply country code +34 followed by the 9-digit Spanish number.

However, a Spanish number beginning with 954 is most likely in or near Seville.

(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, Japan uses 010, Australia uses 0011, and many other countries use different prefixes.)