Area Code 9921 – Regen
The phone area code for Regen is 9921 (international format +499921). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 9921
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📍 Geographic Location of Regen
Overview of Area Code 9921
Area code +49 9921 is a geographic National Destination Code (NDC) assigned to the city of Regen and its surrounding administrative district in the state of Bavaria, Germany. This code is part of the German telephone numbering plan, which follows ITU-T E.164 recommendations. The full international dialing format is +49 9921 [local number], while within Germany, callers use the national trunk prefix 0 before the area code, resulting in 0 9921 [local number].
Geographic Coverage and Jurisdiction
The 9921 area code serves the town of Regen, which is the administrative seat of the Regen district (Landkreis Regen) in the Lower Bavarian region. The coverage area includes the town center and several surrounding municipalities, such as Rinchnach, Zwiesel, and Viechtach (though some of these may have their own codes). The region is located in the Bavarian Forest, near the border with the Czech Republic. The local telephone network is operated by Deutsche Telekom and other licensed carriers, with number allocation managed by the Federal Network Agency (Bundesnetzagentur).
Dialing Formats and Caller Instructions
For local callers within the Regen area, it is possible to dial the subscriber number without the area code, depending on the specific local dialing plan. However, for all calls from outside the area code region (but within Germany), the national format 0 9921 [local number] must be used. For international callers, the format is +49 9921 [local number]. For example, a typical local number might be dialed as +49 9921 123456 from abroad, or 0 9921 123456 from within Germany.
Numbering and Overlay Considerations
Subscriber numbers within the 9921 area code typically have a length of 5 to 7 digits, resulting in a total number length of 9 to 11 digits when including the country code and area code. As of the latest updates, there is no overlay code in this region, meaning that the area code is unique for the geographic area. However, number portability allows subscribers to retain their numbers even if they switch to a different provider, which can sometimes lead to a number being served by a network outside the traditional geographic area. This does not affect the dialing format.
Practical Usage
Businesses and residents in Regen use this area code for fixed-line telephony, including PSTN and VoIP services. When calling from a mobile phone within Germany, it is standard to use the national format with the leading 0. For international callers, it is essential to replace the leading 0 with the +49 country code. Always verify the local number length, as it can vary. For example, a complete international number might be +49 9921 45678 (if the local number is 5 digits) or +49 9921 1234567 (if 7 digits).