Switzerland • NPA 21
☎️ Central Office Exchange (NXX)
+41 (21) 548 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +41 (21) 548. Central office block assigned to Lausanne, Switzerland.
Standard Subscriber Format
+41 (21) 548-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
21
Primary Location
Lausanne
Service Type
Landline
📋 Central Office Exchange 548 Routing Details
The 548 exchange code (central office prefix) operates within the 21 Numbering Plan Area (NPA) servicing Lausanne, Switzerland. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +41 (21) 548 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
021 548-1234or local national format. -
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International Calls: Dial
+41 21 548-1234from outside Switzerland. -
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E.164 Standard:
+4121548XXXX
📞 Nearby Exchanges in Area Code 21
View All Area Code 21 Exchanges ›❓ Frequently Asked Questions
What area code is +41 (21) 548?
Phone numbers starting with +41 (21) 548 belong to the 21 area code in Lausanne, Switzerland, routed via exchange block 548.
How do I call a 548 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +41, then 21, and the subscriber number.
Which provider operates the 548 prefix in Lausanne?
Telecom services for the 548 exchange block in Lausanne are primarily assigned to Local Network Carrier for Landline connections.