Area Code 8364 – Hubli, Karnataka

Geographic Overview

The +91 8364 area code is a geographic National Destination Code (NDC) assigned to the city of Hubli (officially Hubballi) in the state of Karnataka, India. This code covers the urban and surrounding suburban areas of Hubli-Dharwad, a major twin-city municipal corporation. Hubli is a significant commercial and industrial hub in the North Karnataka region, while Dharwad serves as the administrative and educational center. The numbering area includes localities such as Vidyanagar, Gokul Road, and the industrial estates of Hubli.

Dialing Formats

For callers within India, the local dialing format is 08364-XXXXXX (where XXXXXX is the 6-digit subscriber number). For international callers, the format is +91 8364 XXXXXX or 011 91 8364 XXXXXX when dialing from the US/Canada. The total number of digits after the country code is 10 (including the NDC), conforming to the 10-digit national significant number (NSN) format used in India.

Caller Instructions

• Local callers (within Hubli): In most cases, you can dial the 6-digit subscriber number directly without the area code. However, due to the implementation of the 10-digit numbering system, some operators may require the full 10-digit number (including the area code) even for local calls. Always check with your service provider.
• National callers (outside Hubli): Dial 0 followed by the area code and subscriber number: 0-8364-XXXXXX.
• International callers: Dial your country's exit code (e.g., 00, 011), then India's country code 91, then the area code without the leading 0, and the subscriber number: +91 8364 XXXXXX.

Numbering and Overlay Considerations

As of the latest ITU-T E.164 national numbering plan, the 8364 code is a geographic code and is not part of an overlay. The subscriber number length is 6 digits, making the total NSN length 10 digits. There are no plans for an overlay in this area, but the Telecom Regulatory Authority of India (TRAI) has mandated 10-digit dialing for all fixed-line and mobile numbers across the country. Therefore, even for local calls, it is advisable to use the full 10-digit number (including the area code) to avoid any routing issues.

Services and Usage

This code is used for fixed-line PSTN services, including traditional copper lines and VoIP-based fixed lines. It is also used for some enterprise and government lines. Mobile numbers in Hubli use separate non-geographic prefixes (e.g., +91 9XXXXX), so they are not covered under this code.

For international callers, it is important to note that the leading 0 of the area code is always dropped when dialing from abroad. For example, to call a landline in Hubli with the number 123456, you would dial +91 8364 123456.