Area Code 13 – Vienna
The phone area code for Vienna is 13 (international format +4313). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 13
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Vienna
Geographic Scope and Regulatory Framework
The Austrian country calling code +43 is governed under the national numbering plan administered by RTR-GmbH (Rundfunk und Telekom Regulierungs-GmbH), in accordance with ITU-T E.164 recommendations. The prefix 13 is a geographic National Destination Code (NDC) assigned to the capital city, Vienna (Wien). As a geographic code, it routes calls to the PSTN (Public Switched Telephone Network) based on the physical location of the subscriber's line. The area code 13 covers the entire Vienna metropolitan area, including the 23 municipal districts (Bezirke) and surrounding suburban communities that fall within the city's administrative boundaries. This code is used for fixed-line services, including traditional copper, fiber-optic (FTTH), and cable-based telephony.
Dialing Formats and Number Structure
When dialing a Vienna fixed-line number from within Austria, the trunk prefix 0 is used before the area code, followed by the subscriber number. The complete national format is 0 13 XX XXX XX (or 0 13 XXXXXXX, depending on the subscriber number length). From abroad, callers must use the international prefix (typically + or 00), followed by the country code 43, the area code 13 (without the leading 0), and the subscriber number: +43 13 XX XXX XX. For example, a local Vienna number might be dialed as 01 234 5678 nationally and +43 1 234 5678 internationally. Note: The area code 13 is distinct from the older Vienna code 1 (which is now used for mobile services and some fixed-line services). The 13 code was introduced to provide additional numbering capacity for Vienna's expanding fixed-line market.
Caller Instructions and Overlay Considerations
For local callers within Vienna, it is essential to include the area code 013 (or 13 after the trunk prefix) even for calls within the same geographic area, as Austria has implemented closed dialing for fixed-line numbers. This means that all national calls require the full national number, including the NDC. For international callers, the leading '0' of the area code is always omitted. There are no overlay codes for Vienna's 13 area; however, the coexistence of multiple geographic codes (such as 1, 2, 3, etc.) within the city requires precise dialing. When calling from a mobile phone, the same national format is used, but the call may be subject to mobile tariffs. For calls from abroad, ensure you have the correct international exit code (e.g., 00 from most European countries, 011 from North America).
Technical Considerations and Number Portability
As with all Austrian geographic numbers, subscribers may port their numbers to other fixed-line providers or, in some cases, to VoIP services, but the number retains its geographic significance. This means that even if a call is routed over IP, the number remains associated with Vienna for emergency services and caller location identification. For businesses, using a 13 number establishes a local presence in Vienna, which can be beneficial for customer trust and local search optimization. However, for organizations seeking a nationwide presence, non-geographic numbers (e.g., 05, 0720) or toll-free numbers (0800) might be more appropriate.