Area Code 227 – Mumbai
The phone area code for Mumbai is 227 (international format +91227). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 227
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Mumbai
Geographic Coverage and Administrative Jurisdiction
The +91 227 area code is a geographic National Destination Code (NDC) assigned to Mumbai, the capital city of the Indian state of Maharashtra. This code specifically serves the island city area of Mumbai, which is distinct from the broader Mumbai Metropolitan Region that includes suburbs and satellite towns. The 227 prefix is allocated to landline (PSTN) services within this jurisdiction, managed by Bharat Sanchar Nigam Limited (BSNL) and other licensed operators. The coverage area includes key districts such as Fort, Colaba, Nariman Point, and the surrounding business and residential neighborhoods. This code is part of the historical numbering plan of Mumbai, which was one of the first cities in India to adopt a two-digit area code (22) before the introduction of additional codes like 227 to accommodate growing demand.
Dialing Formats and Caller Instructions
For local callers within Mumbai, the area code is typically omitted when dialing a number within the same city. However, for calls from other parts of India, the format is: 0 227 XXX XXXX. For international callers, the format is: +91 227 XXX XXXX. It is important to note that the area code 227 is part of the larger Mumbai numbering plan, which also includes codes like 22, 240, and 241. Overlay considerations apply: when calling from a mobile phone within India, the trunk prefix '0' is often optional, but it is recommended to include it for clarity. For example, to call a landline in Mumbai from the United States, one would dial: 011 91 227 XXX XXXX. Always replace 'XXX XXXX' with the actual 7-digit subscriber number.
Technical and Regulatory Notes
As per ITU-T E.164, the country code for India is +91, and the NDC '227' is a geographic code. The subscriber number length is 7 digits, making the total national significant number (NSN) 10 digits (excluding the trunk prefix). This code is not portable to other geographic areas; it is tied to the physical location of the exchange. However, number portability within the same geographic area is available for fixed-line services, allowing subscribers to switch operators while retaining their number. For VoIP and international callers, it is essential to use the correct international format to avoid misrouting. The 227 code is also used for fax and data services, and it is subject to the same regulatory framework as other geographic codes in India.