Area Code 8636 – Guntur, Andhra Pradesh
The phone area code for Guntur, Andhra Pradesh is 8636 (international format +918636). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 8636
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Guntur, Andhra Pradesh
Geographic Overview
The +91 8636 area code is a geographic National Destination Code (NDC) assigned to the Guntur region in the state of Andhra Pradesh, India. Guntur is a major commercial and administrative hub located in the Coastal Andhra region, approximately 65 kilometers west of the Bay of Bengal. The numbering area covers the Guntur urban agglomeration, including the city of Guntur and its surrounding suburban areas, such as Mangalagiri, Tadepalli, and Pedakakani. This code is administered under the broader telecom circle of Andhra Pradesh, which follows the ITU-T E.164 international numbering standard.
Dialing Formats
For domestic callers within India, the local dialing format is 0-8636-XXXXXX, where the leading '0' is the trunk prefix used to access the national long-distance network. The subscriber number is typically six digits long, making the complete domestic format 0-8636-XXXXXX. For international callers, the format is +91-8636-XXXXXX, where '+91' is the country calling code for India. When dialing from a mobile phone within India, the '0' trunk prefix is often optional, but it is mandatory when dialing from a landline to another landline in a different NDC area.
Coverage and Administration
The 8636 area code serves both wireline (PSTN) and fixed wireless services. It is a geographic code, meaning that the number is tied to a physical location, and calls are routed based on the destination's geographic area. The region is served by multiple telecom operators, including BSNL, Airtel, Jio, and Vi, who provide both landline and mobile services. However, mobile numbers in India are non-geographic and have their own prefixes (e.g., 9xxxxx). The 8636 code is exclusively for fixed-line services, and subscribers may have the option to retain their number when moving within the same NDC area, subject to operator policies.
Caller Instructions
For local callers within the Guntur area, dialing the subscriber number directly without the area code is possible if the call is within the same short-distance charging area (SDCA). For callers from other parts of India, always dial the full national format: 0-8636-XXXXXX. International callers should replace the trunk prefix '0' with the country code '+91', resulting in +91-8636-XXXXXX. It is important to note that while some operators may allow VoIP-based calls to these numbers, traditional PSTN routing remains the standard for reliability. As of the latest telecom regulations, there are no overlay codes for this area, and the 8636 code remains the sole geographic identifier for Guntur's fixed-line network.