Area Code 5515 – Au
The phone area code for Au is 5515 (international format +435515). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 5515
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Au
Geographic Overview
The Austrian area code +43 5515 is a geographic National Destination Code (NDC) assigned to the Au region in the westernmost state of Vorarlberg. This code covers the administrative district of Bregenz and includes the municipality of Au and its surrounding alpine communities, such as Schoppernau and Schnepfau, situated in the Bregenzerwald valley. The region is known for its mountainous terrain and tourism infrastructure.
Dialing Formats
For local callers within Austria, the trunk prefix 0 is used before the area code, followed by the subscriber number. The complete national format is 0 5515 XXXXX. For international callers, the country code +43 replaces the leading zero, resulting in the format +43 5515 XXXXX. Subscriber numbers in this area typically consist of 5 to 7 digits, depending on the specific exchange and service provider.
Caller Instructions
When calling from abroad, always omit the leading trunk prefix '0' and use the international access code of your country (e.g., 011 from the US, 00 from most European countries) followed by 43 and the area code without the zero. For example, to call a number in Au from the United States, dial 011 43 5515 XXXXX. From the United Kingdom, dial 00 43 5515 XXXXX. If you are already in Austria and calling from a different region, simply dial 0 5515 XXXXX. For calls within the same local area, the area code may be omitted, but this practice is becoming less common with the widespread use of mobile phones and VoIP services.
Regulatory and Technical Notes
The Austrian Regulatory Authority for Broadcasting and Telecommunications (RTR) administers numbering resources. The +43 5515 code is classified as a geographic number, meaning it is tied to a physical location. However, due to number portability, a subscriber may have moved their fixed-line number to a different geographic location or even to a VoIP service, but the number retains its original geographic association. This is important for emergency services, as the location information may not always reflect the actual physical address of the caller. For businesses, using a geographic number like +43 5515 can enhance local presence and trust among customers in the Bregenzerwald area.