Area Code 2165 – Hainburg a.d. Donau

Overview of +43 2165

The international dialing code +43 2165 is a geographic area code assigned to Hainburg an der Donau and its surrounding communities in the federal state of Lower Austria (Niederösterreich). This code is part of the Austrian national numbering plan, which follows ITU-T E.164 recommendations. The region is located in the easternmost part of Austria, near the Slovakian border, and is known for its historical significance and proximity to the Danube River.

Geographic Coverage

The area code 2165 covers the municipality of Hainburg an der Donau, including its incorporated villages and nearby localities such as Hundsheim and parts of the surrounding cadastral areas. The administrative district is Bruck an der Leitha, and the code serves both residential and business subscribers within this defined geographic region.

Dialing Formats

When calling a number in this region, the dialing format depends on the caller's location:

• Domestic calls (within Austria): Dial the trunk prefix 0 followed by the area code and subscriber number. For example, to reach a local number 1234567, dial 0 2165 1234567.
• International calls (from outside Austria): Dial the international access prefix (e.g., 00 or +), then the Austrian country code 43, followed by the area code without the leading zero, and the subscriber number. For example, from the US, dial 011 43 2165 1234567 or +43 2165 1234567.

Number Structure

Subscriber numbers within the 2165 area code typically consist of 6 to 7 digits, making the total length of a domestic number (including the area code) 9 to 10 digits, excluding the trunk prefix. The exact length may vary depending on the number range allocated by the Austrian Regulatory Authority for Broadcasting and Telecommunications (RTR).

Overlay and Numbering Considerations

As of the latest updates, there are no overlay codes for this area. The geographic code is not portable to other regions, meaning that if a subscriber moves outside the Hainburg area, they must obtain a new number with the appropriate local area code. However, number portability within the same geographic area is possible between different service providers.

Caller Instructions

For local callers within Hainburg, it is common to dial only the subscriber number for local calls, but this practice is becoming less standardized with the proliferation of VoIP and mobile services. For international callers, always ensure to replace the leading zero of the area code with the country code +43.

This area code is used for fixed-line PSTN and VoIP services. Mobile numbers in Austria use separate non-geographic prefixes (e.g., 0664, 0676) and are not associated with this geographic code.