There are many countries with domestic telephone area code 052 or similar. It is impossible to say which one you're asking about.
There is no area code 678 in Mexico.
The country code and area code of Santa Rosa Del Monday, Paraguay is 595, (0)678.
Vanuatu is country code +678.
678 is an Atlanta, GA area code
The area code for Marietta, GA is 770, with overlay codes 678 and 470.
Country code +229 (dialed as 00 229 from many places) is Benin.Landline numbers begin with +229 2.Mobile numbers begin with +229 9.(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.)
Telephone country code +881 is used for satellite phones, and +881 6 is assigned to Iridium.Country code +678 is Vanuatu, but there are no numbers beginning with +678 81.(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.)
Winder, GA, is in area codes 770, 678, and 470 (multi-overlay).
678 + 75 = 753
234 + 678 = 912
789 + 678 = 1467
Woodstock, Georgia, is in suburban Atlanta area code 770, with overlay codes 678 and 470. There may also be some numbers in area code 404 in Woodstock.