Area Code 5578 – Höchst
The phone area code for Höchst is 5578 (international format +435578). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 5578
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Höchst
Geographic Overview
The Austrian area code +43 5578 is a geographic destination code assigned to the westernmost region of Vorarlberg, specifically serving the municipality of Höchst and its immediate surroundings. Höchst lies in the Rhine Valley, bordering Lake Constance (Bodensee) to the north and the Swiss canton of St. Gallen to the west. The code covers the administrative district of Bregenz, which is the political capital of Vorarlberg. While Höchst is the primary locality, the prefix also serves nearby villages such as Fußach and Gaißau, which share the same local exchange area. These communities are part of the greater Bregenz metropolitan area, though they maintain distinct local identities.
Dialing Formats
For callers within Austria, the national trunk prefix 0 is used before the area code. Thus, to call a Höchst number from Vienna or Salzburg, you would dial: 0 5578 [local subscriber number]. The local subscriber number typically consists of 5 to 7 digits, depending on the specific line and service provider. For example, a complete national number might appear as 0 5578 12345.
For international callers, the Austrian country code +43 replaces the leading zero. Hence, from abroad, you would dial: +43 5578 [local subscriber number]. Using the same example, the international format would be +43 5578 12345. It is crucial to omit the trunk prefix '0' when dialing from outside Austria, as the country code already includes the necessary routing information.
Caller Instructions
Local callers within the Höchst exchange area can often dial just the subscriber number without the area code, depending on their telephone service provider's configuration. However, for clarity and to avoid misdialing, it is recommended to always include the area code when calling from mobile phones or VoIP services, as these do not automatically assume a local area. Foreign callers should note that Austrian numbers are generally answered in German, and the local time zone is Central European Time (CET, UTC+1) with daylight saving time in summer (CEST, UTC+2).
Overlay and Numbering Plan Considerations
Currently, there is no overlay code for the 5578 area, meaning that the geographic region is exclusively served by this prefix. However, as with all Austrian geographic codes, number portability allows subscribers to retain their numbers even if they switch to a different operator, including VoIP providers. This means that a number with the 5578 prefix might not necessarily be physically located in Höchst; it could be routed via IP-based services. Nonetheless, the prefix remains a reliable indicator of the original geographic assignment for billing and emergency services purposes.