Denmark • NPA 42
☎️ Central Office Exchange (NXX)
+45 (42) 721 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +45 (42) 721. Central office block assigned to Mobile Network, Denmark.
Standard Subscriber Format
+45 (42) 721-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
42
Primary Location
Mobile Network
Service Type
Landline
📋 Central Office Exchange 721 Routing Details
The 721 exchange code (central office prefix) operates within the 42 Numbering Plan Area (NPA) servicing Mobile Network, Denmark. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +45 (42) 721 prefix range are primarily provisioned by Local Network Carrier, delivering local landline voice lines and network routing.
🌐 Dialing Instructions
-
•
Domestic Calls: Dial
042 721-1234or local national format. -
•
International Calls: Dial
+45 42 721-1234from outside Denmark. -
•
E.164 Standard:
+4542721XXXX
📞 Nearby Exchanges in Area Code 42
View All Area Code 42 Exchanges ›❓ Frequently Asked Questions
What area code is +45 (42) 721?
Phone numbers starting with +45 (42) 721 belong to the 42 area code in Mobile Network, Denmark, routed via exchange block 721.
How do I call a 721 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +45, then 42, and the subscriber number.
Which provider operates the 721 prefix in Mobile Network?
Telecom services for the 721 exchange block in Mobile Network are primarily assigned to Local Network Carrier for Landline connections.