Area Code 78 – Novo Mesto/Krško
The phone area code for Novo Mesto/Krško is 78 (international format +38678). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 78
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Novo Mesto/Krško
Geographic Coverage and Administration
The +386 78 numbering area is a geographic allocation within the Slovenian national numbering plan, administered by the Agency for Communication Networks and Services of the Republic of Slovenia (AKOS). This code serves the southeastern region of the country, primarily encompassing the towns of Novo Mesto and Krško, along with their surrounding municipalities. Novo Mesto, the largest city in the region, acts as a commercial and administrative hub, while Krško is known for its industrial base, including the Krško Nuclear Power Plant.
Dialing Formats and Usage
Within Slovenia, calls to numbers in the 78 area require dialing the trunk prefix 0 followed by the area code and the subscriber's local number. For example, a local call to a subscriber in Novo Mesto might be dialed as 07 8XX XXXX (note: the area code is often written as 07, but the national significant number is 78). Internationally, callers must dial the Slovenian country code +386, then the area code 78, followed by the subscriber number, omitting the leading trunk prefix. For instance, a call from abroad would be placed to +386 78XX XXXX.
Numbering and Overlay Considerations
As of the latest AKOS updates, the 78 area code does not have an overlay code; the geographic numbering is not subject to number portability between fixed-line operators, though portability to VoIP or mobile services is possible. Subscriber numbers within this code are typically 7 digits long, making the total national significant number 9 digits (including the area code). The region has seen gradual adoption of VoIP services, which may affect the traditional geographic association, but the code remains officially designated for fixed-line services in the Novo Mesto–Krško area.
Caller Instructions
For local callers within Slovenia, simply dial the 7-digit subscriber number if calling within the same area code, or include the trunk prefix and area code if calling from other regions. For international callers, always use the full international format: +386 78XX XXXX. Ensure that you replace 'XX' with the actual subscriber digits. This area code is not used for mobile services, which are allocated under non-geographic prefixes such as 30, 31, 40, 41, etc.