Area Code 42 – Varaždin

Geographic Area Code 42 – Varaždin County, Croatia

The telephone area code 42 is a geographic National Destination Code (NDC) within the Croatian numbering plan, assigned to the northern Croatian region of Varaždin County. This area is part of the country's continental zone, bordering Slovenia to the northwest. The code serves the city of Varaždin, the county seat, as well as surrounding municipalities such as Ivanec, Novi Marof, Ludbreg, and Lepoglava. Geographically, the region is known for its baroque architecture, textile industry, and proximity to the Drava River.

When dialing a fixed-line number in this area from within Croatia, subscribers must use the trunk prefix 0 followed by the area code and the subscriber's seven-digit local number. For example, a local call to a Varaždin number would be dialed as 042 XXX XXXX. From abroad, callers must replace the leading zero with the Croatian country code +385, resulting in the international format +385 42 XXX XXXX. This format is essential for proper routing through international telecommunication networks.

It is important to note that the 42 area code is a geographic allocation, meaning that the tariff for calls to these numbers is typically based on the location of the called party. However, with the rise of number portability, a subscriber may have moved their fixed-line number to a different operator or even to a VoIP service, but the geographic association remains for administrative and emergency routing purposes. For callers, this means that dialing a 42 number from a mobile phone or another fixed line within Croatia will incur standard national call charges, which may vary depending on the caller's operator and tariff plan.

For international callers, the process is straightforward: dial the international access prefix (e.g., 00 from most European countries, or 011 from North America), then 385, then 42, followed by the seven-digit local number. No additional trunk prefix is used. For example, a caller from the United States would dial 011 385 42 XXX XXXX to reach a fixed line in Varaždin.

In terms of dialing within the same area code, local calls can often be made using only the seven-digit subscriber number, depending on the operator's network configuration. However, for clarity and to avoid misdialing, it is recommended to always use the full national format, especially when calling from mobile networks.

As Croatia continues to modernize its telecommunications infrastructure, the 42 area code remains a stable and essential part of the national numbering plan, serving both residential and business customers in the Varaždin region.