Area Code 5550 – Thüringen
The phone area code for Thüringen is 5550 (international format +435550). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 5550
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Thüringen
Geographic Overview
The Austrian area code +43 5550 is a geographic National Destination Code (NDC) assigned to the region of Thüringen in the westernmost part of the country, within the federal state of Vorarlberg. This mountainous area, situated near the Swiss and Liechtenstein borders, encompasses the municipality of Thüringen and its surrounding villages, including parts of the Walgau valley. The code serves both residential and business subscribers within this defined administrative jurisdiction.
Dialing Formats
For callers within Austria, the national trunk prefix 0 must be dialed before the area code, followed by the subscriber's local number. The complete national format is:
- 0 5550 [local subscriber number]
Local subscriber numbers in this region typically consist of 4 to 6 digits, making the total national significant number (NSN) length 9 to 11 digits when including the leading '0'. For example, a local number might be dialed as 0 5550 12345.
For international callers, the Austrian country code +43 replaces the trunk prefix, and the area code is used without the leading zero. The international format is:
- +43 5550 [local subscriber number]
Thus, the same number would be dialed as +43 5550 12345 from abroad.
Caller Instructions
Local callers within the Thüringen area may sometimes dial only the local subscriber number, depending on the specific telephone exchange configuration. However, for clarity and to avoid misrouting, it is recommended to always use the full national format, especially when calling from mobile phones or VoIP services.
Foreign callers should note that Austrian numbers are part of the E.164 numbering plan, and no additional prefixes are required beyond the international access code (e.g., 00 from most European countries, or 011 from North America). Ensure that the plus sign (+) is used when dialing from mobile devices to indicate the international prefix.
Overlay and Numbering Considerations
As of the latest ITU-T and RTR (Rundfunk und Telekom Regulierungs GmbH) guidelines, no overlay codes have been implemented for the 5550 area. Subscribers retain their existing numbers, and new allocations follow the standard geographic assignment rules. Number portability is available within Austria, allowing subscribers to retain their numbers when changing providers, but the geographic significance of the code remains tied to the Thüringen region.
Practical Usage
Businesses operating in Thüringen should prominently display their numbers in international format on websites and marketing materials to facilitate global reach. For travelers, saving contacts with the +43 prefix ensures seamless connectivity when roaming or calling from abroad.