Austria • NPA 7764
☎️ Central Office Exchange (NXX)
+43 (7764) 528 Exchange Code
Technical registry directory for telephone subscriber numbers starting with +43 (7764) 528. Central office block assigned to Riedau, Austria.
Standard Subscriber Format
+43 (7764) 528-XXXX
Telecom Carrier
Local Network Carrier
Area Code (NPA)
7764
Primary Location
Riedau
Service Type
Landline
📋 Central Office Exchange 528 Routing Details
The 528 exchange code (central office prefix) operates within the 7764 Numbering Plan Area (NPA) servicing Riedau, Austria. All assigned subscriber lines in this block follow ITU-T E.164 national routing protocols.
Telecommunication services within the +43 (7764) 528 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
07764 528-1234or local national format. -
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International Calls: Dial
+43 7764 528-1234from outside Austria. -
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E.164 Standard:
+437764528XXXX
📞 Nearby Exchanges in Area Code 7764
View All Area Code 7764 Exchanges ›❓ Frequently Asked Questions
What area code is +43 (7764) 528?
Phone numbers starting with +43 (7764) 528 belong to the 7764 area code in Riedau, Austria, routed via exchange block 528.
How do I call a 528 exchange number from abroad?
To call this prefix internationally, dial your local exit code (e.g., 011 in North America or + globally), followed by +43, then 7764, and the subscriber number.
Which provider operates the 528 prefix in Riedau?
Telecom services for the 528 exchange block in Riedau are primarily assigned to Local Network Carrier for Landline connections.