Area Code 35 – Karlovy Vary Region
The phone area code for Karlovy Vary Region is 35 (international format +42035). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 35
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Karlovy Vary Region
Geographic Coverage and Administrative Jurisdiction
The +420 35 country and area code combination is the international dialing prefix for the Karlovy Vary Region (Karlovarský kraj) in the Czech Republic. This geographic area code serves the westernmost part of the country, bordering Germany. The region is administratively divided into three districts (okresy): Karlovy Vary, Cheb, and Sokolov. The code covers all fixed-line telephone numbers within these districts, including the regional capital Karlovy Vary, as well as other significant towns such as Cheb, Sokolov, Mariánské Lázně, and Františkovy Lázně.
Dialing Formats and Number Structure
Within the Czech Republic, the national trunk prefix is 0, but for domestic calls to Karlovy Vary numbers, callers simply dial the area code (35) followed by the subscriber number. The complete national significant number (NSN) for a geographic number in this region is nine digits long, beginning with 35. For example, a local number in Karlovy Vary might be 35 123 4567. When calling from abroad, the international format is +420 35 123 4567. The Czech numbering plan does not use a trunk prefix for international calls; the +420 country code is dialed directly.
Local and International Call Guidance
For local callers within the Karlovy Vary area, dialing a number in the same area code typically requires only the subscriber number, but due to the current ten-digit dialing system (including the leading 0 for domestic calls), it is common to dial the full national number: 0 35 123 4567. For callers from other Czech regions, the same format applies. International callers should replace the leading 0 with +420, so the number becomes +420 35 123 4567. It is important to note that the Czech Republic has no area code overlays; each geographic region has a unique code, and number portability allows subscribers to keep their numbers when moving within the country, though the geographic significance may be lost.
Technical and Regulatory Notes
Geographic numbers in the Czech Republic are allocated by the Czech Telecommunication Office (ČTÚ) and are primarily used for fixed-line PSTN and VoIP services. They are subject to national numbering plan regulations. The Karlovy Vary Region is known for its thermal springs and spa towns, which are popular tourist destinations, so many hotels and businesses in the area use these numbers. When dialing from a mobile phone, the same international format applies. For emergency services, the European emergency number 112 is used, and local emergency numbers (150 fire, 155 medical, 158 police) are also accessible.