Area Code 1255 – Siwani, Haryana

Overview of Area Code 1255

Area code 1255 is a geographic National Destination Code (NDC) within the Indian numbering plan, assigned to the town of Siwani and its surrounding areas in the Bhiwani district of the state of Haryana, India. This code is part of the fixed-line PSTN (Public Switched Telephone Network) infrastructure, used for traditional landline services. The region falls under the administrative jurisdiction of the Bhiwani district, which is known for its semi-arid climate and agricultural economy.

Geographic Coverage and Dialing Format

The 1255 area code covers Siwani and nearby villages, including areas such as Chappar, Dhanana, and Biran. The primary towns and cities served include Siwani itself and, to a lesser extent, parts of the Bhiwani district. For local callers within India, the dialing format for a fixed-line number in Siwani is:

• STD (Subscriber Trunk Dialing) format: 0-1255-XXXXXX (where XXXXXX is the 6-digit local subscriber number).
• International format: +91-1255-XXXXXX (when calling from outside India).

For example, a local number in Siwani might be 1255-234567. To call this number from another city in India, you would dial 0-1255-234567. From abroad, you would dial +91-1255-234567.

Overlay and Numbering Considerations

As of the latest updates, there is no overlay code for the 1255 area; it operates as a standalone NDC. Subscriber numbers in this area are typically 6 digits long, resulting in a total of 10 digits for the full national significant number (NDC + subscriber number) when including the leading trunk prefix '0' for domestic calls. The numbering plan adheres to the ITU-T E.164 recommendation, ensuring international dialing compatibility.

Caller Instructions

For local callers within Siwani: If you are calling another fixed-line number within the same STD code, you may often dial only the 6-digit subscriber number without the area code, depending on the local exchange settings. However, for clarity and to avoid misdialing, it is recommended to use the full STD format.

For callers from other parts of India: Always prefix the area code with the trunk access code '0'. For example, to call a Siwani number from Delhi, dial 0-1255-XXXXXX.

For international callers: Dial the international access prefix (e.g., 00 or +), followed by India's country code 91, then the area code without the leading '0', and the subscriber number. For instance, from the United States, you would dial 011-91-1255-XXXXXX.

Mobile and VoIP considerations: While this code is geographic, many subscribers may have migrated to mobile or VoIP services. However, the number remains associated with the Siwani region for routing purposes. When calling from a mobile phone, you must include the '0' before the area code for domestic calls, unless you are using a VoIP service that requires a different format.

For any changes in dialing procedures, especially after the implementation of the National Numbering Plan, users are advised to consult their telecom service provider.