Sweden • NPA 156
☎️ Central Office Exchange (NXX)
+46 (156) 423 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +46 (156) 423. Central office block assigned to Trosa-Vagnhärad, Sweden.
Standard Subscriber Format
+46 (156) 423-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
156
Primary Location
Trosa-Vagnhärad
Service Type
Landline
📋 Central Office Exchange 423 Routing Details
The 423 exchange code (central office prefix) operates within the 156 Numbering Plan Area (NPA) servicing Trosa-Vagnhärad, Sweden. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +46 (156) 423 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
0156 423-1234or local national format. -
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International Calls: Dial
+46 156 423-1234from outside Sweden. -
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E.164 Standard:
+46156423XXXX
📞 Nearby Exchanges in Area Code 156
View All Area Code 156 Exchanges ›❓ Frequently Asked Questions
What area code is +46 (156) 423?
Phone numbers starting with +46 (156) 423 belong to the 156 area code in Trosa-Vagnhärad, Sweden, routed via exchange block 423.
How do I call a 423 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +46, then 156, and the subscriber number.
Which provider operates the 423 prefix in Trosa-Vagnhärad?
Telecom services for the 423 exchange block in Trosa-Vagnhärad are primarily assigned to Local Network Carrier for Landline connections.