Area Code 34 – Senica
The phone area code for Senica is 34 (international format +42134). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 34
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Senica
Overview of Area Code +421 34
The +421 34 area code is a geographic National Destination Code (NDC) assigned to the Senica region in western Slovakia. This code covers the administrative districts of Senica and Skalica, which are part of the Trnava Region. The area is known for its proximity to the Czech border and includes towns such as Senica, Skalica, Holíč, and Gbely. The numbering area is served by fixed-line PSTN and VoIP operators, and calls within this region are routed based on the geographic location of the subscriber's line.
Dialing Formats and Usage
When dialing a number within the Senica area code from within Slovakia, the national trunk prefix '0' is used, followed by the area code and the subscriber number. For example, a local number in Senica might be dialed as 034 123 4567 from elsewhere in Slovakia. Internationally, callers should dial +421 34 123 4567, omitting the leading '0'. The subscriber number length within this area code is typically 7 digits, making the complete international number 12 digits long when including the country code.
Geographic Coverage and Local Significance
The +421 34 area code is tied to the historical and administrative region of Záhorie, which lies between the Little Carpathians and the Morava River. Senica, the principal city, serves as an economic and cultural hub, while Skalica is noted for its historical architecture. The area code is also used in surrounding villages and municipalities, ensuring that all fixed-line services in this district share a common numbering scheme. This geographic allocation is managed by the Slovak Regulatory Authority for Electronic Communications and Postal Services (RU), in accordance with ITU-T E.164 recommendations.
Overlays and Number Portability
Currently, there is no overlay code for the Senica area; the 34 NDC is exclusively used for this region. However, subscribers may retain their numbers when switching between fixed-line operators, thanks to local number portability. This means that a number with the +421 34 prefix may be served by any licensed operator, but the geographic association remains unchanged. For callers, this does not affect dialing procedures.
Practical Guidance for Callers
For local callers within the same area code, it is often possible to dial only the subscriber number, depending on the operator's dialing plan. However, for clarity and consistency, it is recommended to use the full national format (034 + subscriber number) when calling from a different area code. International callers should always use the +421 country code and drop the trunk prefix. For example, to call a business in Senica from abroad, one would dial +421 34 123 4567. This ensures proper routing through the international telephone network.