Area Code 4235 – Quezon

Overview of Area Code 4235

Area code 4235 is a geographic telephone code assigned to the province of Quezon in the Philippines. It forms part of the national numbering plan under the National Telecommunications Commission (NTC) and follows the ITU-T E.164 standard. The code is used for landline services within the province, covering both the capital, Lucena City, and numerous municipalities.

Geographic Coverage and Jurisdiction

Quezon is located in the CALABARZON region on Luzon Island. The area code serves the entire province, including major population centers such as Lucena City, Tayabas, Sariaya, and Candelaria. It also covers coastal towns like Infanta and General Nakar on the Pacific side. The administrative jurisdiction falls under the provincial government of Quezon, with local exchange carriers providing PSTN services.

Dialing Formats

For local calls within Quezon, subscribers typically dial the 7-digit subscriber number without the area code. For calls from other provinces or mobile networks, the format is: 0 42 35X XXXX (where X represents the subscriber digits). Internationally, callers must use the country code for the Philippines, so the full international format is +63 42 35X XXXX. For example, a landline number in Lucena might be +63 42 350 1234.

Overlay and Numbering Considerations

Currently, there is no overlay plan for area code 42, meaning that 4235 is the primary code for the province. However, with the increasing demand for telecommunication services, the NTC may introduce additional area codes or overlay in the future. Subscribers should be aware that when dialing from mobile phones, the leading '0' is often omitted when using the international format, but it is required for domestic long-distance calls.

Caller Instructions

• Local callers within Quezon: Dial the 7-digit local number directly.
• Domestic callers from other regions: Dial 0-42-XXX-XXXX.
• International callers: Dial your country's exit code, then 63-42-XXX-XXXX.

For example, a caller from Manila would dial 042 350 1234, while a caller from the United States would dial 011 63 42 350 1234.

Service Providers and Technology

Landline services in Quezon are primarily provided by the Philippine Long Distance Telephone Company (PLDT) and other local exchange carriers. These services are delivered over traditional copper lines, fiber-optic networks, and increasingly VoIP-based infrastructure. The area code is exclusively for fixed-line services; mobile numbers in the Philippines use separate prefixes and are non-geographic.