Area Code 8635 – Guntur, Andhra Pradesh
The phone area code for Guntur, Andhra Pradesh is 8635 (international format +918635). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 8635
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Guntur, Andhra Pradesh
Geographic Overview
The +91 8635 area code is a geographic National Destination Code (NDC) assigned to the Guntur region in the state of Andhra Pradesh, India. Guntur, a major commercial and administrative hub, is located in the coastal Andhra region and serves as the headquarters of Guntur district. The code covers the city of Guntur and its surrounding areas, including suburban localities and nearby towns that fall within the local calling area.
Dialing Format
For international callers, the number must be dialed as +91 8635 XXX XXX, where +91 is the country calling code for India, 8635 is the area code, and the subscriber number is typically 6 digits long, making the total national significant number (NSN) 10 digits. Within India, callers from outside the Guntur area must dial 0 8635 XXX XXX, using the national trunk prefix 0. Local callers within the Guntur area can often dial the 6-digit subscriber number directly without the area code, depending on the specific telecom operator's local dialing plan. However, due to mobile number portability and the proliferation of mobile phones, it is always safe to dial the full number with the area code, even for local calls.
Administrative and Telecom Context
The Guntur area code is managed by the Department of Telecommunications (DoT) under the Ministry of Communications, Government of India. It is part of the Andhra Pradesh telecom circle. The code is used for fixed-line (PSTN) services, and with the advent of VoIP and fixed wireless terminals, it may also be used for some non-mobile services. Over the years, the region has seen significant urban development, and the telecom infrastructure is robust, supporting both voice and high-speed data services.
Caller Instructions
For local callers within Guntur: If you are calling a landline number within the same STD code area, you may dial only the 6-digit subscriber number. However, if you are calling from a mobile phone, it is advisable to dial the full number with the area code (0 8635 or +91 8635) to ensure proper routing, as mobile networks may not automatically recognize local landline numbers. For callers from outside India, always use the international format: +91 8635 XXX XXX. For callers from other parts of India, dial 0 8635 XXX XXX. If you are unsure about the subscriber number length, note that some numbers may have been migrated to 7-digit subscriber numbers in the past, but current allocations are 6-digit. Always verify the number with the recipient to avoid dialing errors.