Germany • NPA 331
☎️ Central Office Exchange (NXX)
+49 (331) 251 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +49 (331) 251. Central office block assigned to Potsdam, Germany.
Standard Subscriber Format
+49 (331) 251-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
331
Primary Location
Potsdam
Service Type
Landline
📋 Central Office Exchange 251 Routing Details
The 251 exchange code (central office prefix) operates within the 331 Numbering Plan Area (NPA) servicing Potsdam, Germany. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +49 (331) 251 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
0331 251-1234or local national format. -
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International Calls: Dial
+49 331 251-1234from outside Germany. -
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E.164 Standard:
+49331251XXXX
📞 Nearby Exchanges in Area Code 331
View All Area Code 331 Exchanges ›❓ Frequently Asked Questions
What area code is +49 (331) 251?
Phone numbers starting with +49 (331) 251 belong to the 331 area code in Potsdam, Germany, routed via exchange block 251.
How do I call a 251 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +49, then 331, and the subscriber number.
Which provider operates the 251 prefix in Potsdam?
Telecom services for the 251 exchange block in Potsdam are primarily assigned to Local Network Carrier for Landline connections.