Area Code 213 – Lai Chau province

Geographic Overview

The area code 213 is the National Destination Code (NDC) assigned to the landline telephone network of Lai Chau province, a mountainous region in northwestern Vietnam. This geographic code is part of the national numbering plan administered by the Vietnam Telecommunications Authority (VNTA) under the Ministry of Information and Communications, in accordance with ITU-T E.164 recommendations. Lai Chau shares borders with China to the north and the provinces of Dien Bien, Son La, and Lao Cai. The provincial capital is Lai Chau City (also known as Phong Tho), while other key districts include Tam Duong, Sin Ho, and Muong Te.

Dialing Formats

When calling a fixed-line subscriber in Lai Chau from within Vietnam, the trunk prefix 0 is dialed before the area code, followed by the subscriber number. The complete national format is: 0 213 XXX XXXX. For example, a local number such as 3 456 789 would be dialed as 0213 345 6789 from other provinces. From outside Vietnam, callers must use the international access prefix (e.g., 00 or +), followed by Vietnam's country code 84, then the area code without the leading zero, and the subscriber number: +84 213 345 6789.

Caller Instructions

For local callers within Lai Chau, it is generally possible to dial only the 7-digit subscriber number (without the area code) for calls within the same province. However, due to network modernization, some operators may require the full national format even for local calls. For international callers, it is essential to replace the trunk prefix '0' with the country code '+84' and drop the leading zero of the area code. Always confirm the subscriber number length, as it may vary between 7 and 8 digits depending on the district and the operator's numbering plan.

Technical and Regulatory Notes

The 213 area code is a geographic code, meaning it is tied to a specific physical location. Calls to these numbers are routed over the PSTN and are typically charged at local or domestic long-distance rates depending on the caller's location. As of the latest VNTA updates, there are no overlay codes or planned changes for Lai Chau. However, with the increasing adoption of VoIP and IP-based telephony, calls to 213 numbers may be delivered over IP networks, but the dialing format remains unchanged. For businesses, having a 213 number establishes a local presence in Lai Chau, which can be beneficial for customer trust and regional operations.