Norway • NPA 230
☎️ Central Office Exchange (NXX)
+47 (230) 454 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +47 (230) 454. Central office block assigned to Oslo, Norway.
Standard Subscriber Format
+47 (230) 454-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
230
Primary Location
Oslo
Service Type
Landline
📋 Central Office Exchange 454 Routing Details
The 454 exchange code (central office prefix) operates within the 230 Numbering Plan Area (NPA) servicing Oslo, Norway. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +47 (230) 454 prefix range are primarily provisioned by Local Network Carrier, delivering local landline voice lines and network routing.
🌐 Dialing Instructions
-
•
Domestic Calls: Dial
0230 454-1234or local national format. -
•
International Calls: Dial
+47 230 454-1234from outside Norway. -
•
E.164 Standard:
+47230454XXXX
📞 Nearby Exchanges in Area Code 230
View All Area Code 230 Exchanges ›❓ Frequently Asked Questions
What area code is +47 (230) 454?
Phone numbers starting with +47 (230) 454 belong to the 230 area code in Oslo, Norway, routed via exchange block 454.
How do I call a 454 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +47, then 230, and the subscriber number.
Which provider operates the 454 prefix in Oslo?
Telecom services for the 454 exchange block in Oslo are primarily assigned to Local Network Carrier for Landline connections.