Area Code 52 – Gorica/Koper/Postojna
The phone area code for Gorica/Koper/Postojna is 52 (international format +38652). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 52
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Gorica/Koper/Postojna
Geographic Coverage and Administrative Jurisdiction
Slovenian area code 52 is a geographic National Destination Code (NDC) serving the western part of the country, specifically the regions of Gorica (Nova Gorica), Koper, and Postojna. This area is administratively divided between the Gorizia Statistical Region and the Coastal–Karst Statistical Region. The code covers the municipalities of Nova Gorica, Šempeter-Vrtojba, Ajdovščina, Vipava, Koper, Izola, Piran, Sežana, and Postojna, among others.
The region is strategically located along the border with Italy and the Adriatic coast, making it a hub for commerce, tourism, and logistics. The port of Koper is Slovenia's primary seaport, while Nova Gorica is a key cross-border urban center.
Dialing Formats and Caller Instructions
Within Slovenia, calls to numbers in the 52 area require dialing the trunk prefix 0 followed by the area code and the subscriber number. The national significant number (NSN) for geographic numbers in Slovenia is eight digits, so local numbers in the 52 area are seven digits long, prefixed by 0 52 when dialed nationally.
- National dialing (from Slovenia): 0 52 XXX XXX
- International dialing (from abroad): +386 52 XXX XXX
For example, a fixed-line number in Koper might be +386 52 123 456. When calling from a foreign country, replace the leading zero with the country code +386 and omit the trunk prefix. Local callers within the same area code may sometimes dial only the seven-digit subscriber number, but this depends on the operator's settings; it is always safe to use the full national format.
Overlay and Numbering Plan Considerations
Slovenia's numbering plan is regulated by the Agency for Communication Networks and Services of the Republic of Slovenia (AKOS). As of now, there is no overlay code for the 52 area; the code is exclusively assigned to the western geographic region. However, number portability allows subscribers to retain their numbers when changing operators, even if they move outside the original geographic area, which can lead to non-geographic usage of geographic numbers.
For callers, this means that a number with the 52 prefix may not necessarily be physically located in the region, but it is still charged as a geographic call. Emergency services (112) and other short codes are unaffected by area codes.
Practical Examples
- Calling a business in Nova Gorica from the United States: +386 52 987 654
- Calling a friend in Postojna from Ljubljana: 0 52 456 789