Area Code 931 – Würzburg
The phone area code for Würzburg is 931 (international format +49931). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 931
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Würzburg
Geographic Overview
The +49 931 area code is the National Destination Code (NDC) for the city of Würzburg, located in the Bavarian administrative district of Lower Franconia (Unterfranken). This geographic code serves the urban core of Würzburg and its immediate suburban municipalities, including Höchberg, Veitshöchheim, Randersacker, and Gerbrunn. As a classic PSTN (Public Switched Telephone Network) allocation, 931 is tied to the local exchange area and is used for fixed-line services, including ISDN and VoIP-based landlines that retain a geographic presence.
Dialing Formats
For domestic callers within Germany, the area code is dialed with a leading trunk prefix '0' followed by the subscriber number. The local number length typically ranges from 7 to 8 digits, resulting in a complete national significant number (NSN) of 10 to 11 digits (excluding the trunk prefix). For example, a local Würzburg number might be dialed as 0931 1234567 from within Germany.
International callers must replace the trunk prefix with Germany's country code +49, dropping the leading '0'. Thus, the same number would be dialed as +49 931 1234567 from abroad. This format is compliant with ITU-T E.164 recommendations, ensuring global interoperability.
Overlay and Numbering Considerations
Currently, the 931 area code does not have an overlay code, meaning that local calls within the Würzburg area can be made using the 7- or 8-digit subscriber number alone (without the area code) in many cases, depending on the service provider's configuration. However, for clarity and to avoid misdialing, it is advisable to always include the area code when dialing from mobile phones or VoIP services.
Caller Instructions
- Local callers (within Würzburg): If your phone line is provisioned in the same local exchange, you may dial the subscriber number directly. However, if you are using a mobile phone or a VoIP line, always dial the full national format: 0931 + subscriber number.
- Domestic callers from other German cities: Dial 0931 followed by the subscriber number.
- International callers: Dial your country's international access code (e.g., 011 from the US, 00 from most European countries), then 49, then 931, and finally the subscriber number. Remember to omit the leading '0' of the area code.
Service and Regulatory Notes
As a geographic number, 931 is regulated by the German Federal Network Agency (Bundesnetzagentur). Number portability allows subscribers to retain their 931 number when changing fixed-line providers, but the number remains associated with the geographic location. This is particularly relevant for businesses that rely on a local presence to build trust with customers in the Würzburg region.
For enterprises, using a 931 number can enhance local customer service and marketing efforts. It signals a physical presence in Würzburg, which is a major economic and cultural hub in northern Bavaria, home to the University of Würzburg and several global companies.