Slovenia • NPA 56
☎️ Central Office Exchange (NXX)
+386 (56) 231 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +386 (56) 231. Central office block assigned to Gorica/Koper/Postojna, Slovenia.
Standard Subscriber Format
+386 (56) 231-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
56
Primary Location
Gorica/Koper/Postojna
Service Type
Landline
📋 Central Office Exchange 231 Routing Details
The 231 exchange code (central office prefix) operates within the 56 Numbering Plan Area (NPA) servicing Gorica/Koper/Postojna, Slovenia. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +386 (56) 231 prefix range are primarily provisioned by Local Network Carrier, delivering local landline voice lines and network routing.
🌐 Dialing Instructions
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Domestic Calls: Dial
056 231-1234or local national format. -
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International Calls: Dial
+386 56 231-1234from outside Slovenia. -
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E.164 Standard:
+38656231XXXX
📞 Nearby Exchanges in Area Code 56
View All Area Code 56 Exchanges ›❓ Frequently Asked Questions
What area code is +386 (56) 231?
Phone numbers starting with +386 (56) 231 belong to the 56 area code in Gorica/Koper/Postojna, Slovenia, routed via exchange block 231.
How do I call a 231 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +386, then 56, and the subscriber number.
Which provider operates the 231 prefix in Gorica/Koper/Postojna?
Telecom services for the 231 exchange block in Gorica/Koper/Postojna are primarily assigned to Local Network Carrier for Landline connections.