Area Code 23 – Zrenjanin
The phone area code for Zrenjanin is 23 (international format +38123). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 23
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Zrenjanin
Geographic Overview
The +381 23 country code and area code combination corresponds to the geographic numbering area of Zrenjanin, a significant administrative and industrial center located in the Autonomous Province of Vojvodina, Serbia. This area code serves the city of Zrenjanin itself, as well as the surrounding municipalities and settlements within the Central Banat District. The region is known for its agricultural production and manufacturing industries, and the numbering plan reflects a typical Serbian geographic allocation.
Dialing Formats and Number Structure
For international callers, the full number is dialed as +381 23 XXX XXX, where the subscriber number consists of six digits. The total length of the international number is 12 digits, including the country code. Domestically, callers within Serbia dial 023 XXX XXX, with the leading trunk prefix '0' used for national long-distance calls. When dialing from a fixed line within the same area code, the national destination code and the trunk prefix may be omitted, and only the six-digit subscriber number is required. However, due to the implementation of the Serbian numbering plan, all calls to geographic numbers must include the area code when dialed from mobile networks or from other regions.
Regulatory and Technical Context
The Republic of Serbia, under the regulatory authority of the Regulatory Agency for Electronic Communications and Postal Services (RATEL), administers the national numbering plan in accordance with ITU-T E.164 recommendations. The area code 23 is classified as a geographic code, meaning that the tariff and routing are based on the physical location of the subscriber's line. This code is not portable to other geographic areas, but within the same area, subscribers may retain their numbers when switching between fixed-line operators. The network infrastructure supports traditional PSTN services, as well as VoIP services that may be assigned geographic numbers, provided that the service is registered to an address within the Zrenjanin area.
Caller Instructions
For local callers within Zrenjanin, dialing a number in the same area typically requires only the six-digit subscriber number. For callers from other parts of Serbia, the format is 023 + subscriber number. International callers should use +381 23 followed by the subscriber number, omitting the leading '0'. It is important to note that when calling from a mobile phone in Serbia, the area code must always be included, even if the caller is physically within the Zrenjanin area, as mobile networks require full national numbering. Example: to call a Zrenjanin landline from abroad, dial +381 23 456 789.