Area Code 258 – Khanh Hoa province

Geographic Overview

The +84 258 area code is a geographic National Destination Code (NDC) assigned to the province of Khanh Hoa in the South Central Coast region of Vietnam. The province is known for its coastal capital Nha Trang, a major tourist hub, as well as the cities of Cam Ranh and Ninh Hoa. The area code covers all landline telephone services within the province, including both urban and rural districts.

Dialing Formats

When calling a fixed-line number in Khanh Hoa from within Vietnam, subscribers must dial the trunk prefix 0, followed by the area code 258, and then the subscriber number. The national format is: 0 258 XXX XXXX (where X represents a digit). For example, a local number in Nha Trang might be dialed as 0258 385 6789.

For international callers, the country code for Vietnam is +84. Therefore, the international format becomes +84 258 XXX XXXX. For instance, to call the same number from abroad, you would dial +84 258 385 6789. Note that the leading 0 is omitted when dialing from outside Vietnam.

Administrative and Regulatory Notes

The area code 258 is administered by the Vietnam Telecommunications Authority under the Ministry of Information and Communications. It follows the national numbering plan based on ITU-T E.164 recommendations. The subscriber numbers within this code typically consist of 7 digits, making the total length of a national significant number (NSN) 10 digits (including the leading 0).

There are no overlay codes currently active in Khanh Hoa; the 258 code is the sole geographic code for the province. All fixed-line services, including PSTN and VoIP landlines, are assigned numbers under this code. Mobile numbers in Vietnam are not tied to geographic regions and use separate prefixes, such as 090, 091, etc.

Caller Instructions

• Local callers within Khanh Hoa: For calls to other fixed-line numbers in the same province, you may dial only the 7-digit subscriber number without the area code. However, for clarity and to avoid misdialing, it is recommended to use the full national format.
• Callers from other provinces in Vietnam: Dial 0 258 followed by the subscriber number.
• International callers: Dial your country's exit code (e.g., 00 or 011), then 84, then 258, and the subscriber number. Do not include the leading 0.

When traveling in Vietnam, international visitors should be aware that local calls from hotels may incur additional charges. For emergency services, always dial the national emergency numbers (113 for police, 114 for fire, 115 for medical) regardless of the area code.