• Source: Telephone numbers in India

Telephone numbers in India are administered under the National Numbering Plan of 2003 by the Department of Telecommunications of the Government of India. The numbering plan was last updated in 2015. The country code "91" was assigned to India by the International Telecommunication Union in the 1960s.




Fixed-line (landline) numbers


Subscriber trunk dialling (STD) codes are assigned to each city, town and village. These codes can be between 2 and 8 digits long, with the largest metropolitan areas and cities having the shortest (two-digit) codes:

11 - New Delhi, Delhi
22 - Mumbai, Maharashtra
33 - Kolkata, West Bengal
44 - Chennai, Tamil Nadu
20 - Pune, Maharashtra
40 - Hyderabad, Telangana
79 - Ahmedabad, Gujarat
80 - Bengaluru, Karnataka
Second-tier cities and metropolitan areas, as well as large or particularly significant towns have three-digit area codes:

120 - Ghaziabad and Noida, Uttar Pradesh
124 - Gurugram, Haryana
129 - Faridabad, Haryana
135 - Dehradun, Uttarakhand
141 - Jaipur, Rajasthan
160 - Kharar, Punjab
161 - Ludhiana, Punjab
172 - Chandigarh Capital Region, Chandigarh, Punjab and Haryana[1]
175 - Patiala, Punjab
181 - Jalandhar, Punjab
183 - Amritsar, Punjab
233 - Sangli, Maharashtra
240 - Aurangabad, Maharashtra
241 - Ahmednagar, Maharashtra
250 - Vasai-Virar, Maharashtra
251 - Kalyan-Dombivli, Maharashtra
253 - Nashik, Maharashtra
257 - Jalgaon, Maharashtra
260 - Daman, Dadra and Nagar Haveli and Daman and Diu
261 - Surat, Gujarat
265 - Vadodara, Gujarat
343 - Durgapur, West Bengal
413 - Puducherry, Puducherry
422 - Coimbatore, Tamil Nadu
431 - Tiruchirappalli, Tamil Nadu
435 - Kumbakonam, Tamil Nadu
452 - Madurai, Tamil Nadu
462 - Tirunelveli, Tamil Nadu
469 - Thiruvalla, Pathanamthitta District, Kerala
471 - Thiruvananthapuram, Kerala
474 - Kollam, Kerala
477 - Alappuzha, Kerala
478 - Cherthala, Alappuzha District, Kerala
481 - Kottayam, Kerala
483 - Malappuram, Kerala
484 - Kochi, Kerala
485 - Muvattupuzha, Ernakulam District, Kerala
486 - Pathanamthitta, Kerala
487 - Thrissur, Kerala
490 - Thalassery, Kannur District, Kerala
495 - Kozhikode, Kerala
497 - Kannur, Kerala
512 - Kanpur, Uttar Pradesh
522 - Lucknow, Uttar Pradesh
532 - Allahabad, Uttar Pradesh
542 - Varanasi, Uttar Pradesh
551 - Gorakhpur, Uttar Pradesh
562 - Agra, Uttar Pradesh
581 - Bareilly, Uttar Pradesh
591 - Moradabad, Uttar Pradesh
621 - Muzaffarpur, Bihar
612 - Patna, Bihar
641 - Bhagalpur, Bihar
657 - Jamshedpur, Jharkhand
712 - Nagpur, Maharashtra
721 - Amravati, Maharashtra
724 - Akola, Maharashtra
751 - Gwalior, Madhya Pradesh
761 - Jabalpur, Madhya Pradesh
821 - Mysore, Karnataka
824 - Mangalore, Karnataka
831 - Belgaum, Karnataka
836 - Hubli-Dharwad, Karnataka
863 - Guntur, Andhra Pradesh
866 - Vijayawada, Andhra Pradesh
870 - Warangal, Telangana
891 - Visakhapatnam, Andhra Pradesh
3192 - Port Blair, South Andaman Island, Andaman and Nicobar Islands
4896 - Kavaratti, Lakshadweep

The first-ever long-distance subscriber trunk dialing (STD) call in India was made between the cities of Kanpur and Lucknow in 1960.
The total length of all phone numbers (area code and the phone number) is constant at 10 digits. For example, the number 7513200000 signifies the area code 751 (the area code for Gwalior) followed by the phone number.
Fixed-line or landline numbers are at most 8 digits long.




= Fixed-line operators

=
Due to the availability of multiple operators offering fixed-line (landline) services (either wired or wireless), there is an operator code for each telephone number, which is the first digit in the phone number.

For example, a number formatted in the style (020) 3xxx-xxxx represents a fixed-line number in Pune operated by Jio, while (011) 2xxx-xxxx is a fixed-line number in Delhi operated by MTNL, and (07582) 2xx-xxx is a fixed-line number in Sagar, Madhya Pradesh operated by BSNL.




= Format for dialling fixed-line numbers

=
No prefix is required to call from one landline to another within the same area code, as variable-length dialling rules apply. A prefix of the number zero + the area code is required to dial from a landline phone in one STD code area to another. The same prefix of the number zero + the area code is required to dial any fixed-line number in India from a mobile phone, irrespective of the area code.
For example, to dial a landline number in Indore, one would have to dial

from a landline in Indore: the phone number
from a landline in Mumbai: 0731 and then the phone number
from any mobile phone in India: 0731 and then the phone number
from outside India: +91, then 731, and then the phone number
Before 10 March 2009, as per Department of Telecommunications memorandum dated 9 February 2009. there were some exceptions to this general rule for STD areas falling close to each other (within a radius of 200 kilometre), where "0" can be replaced with "95" e.g. to dial Delhi from Gurgaon, one dials 9511+landline number.




Mobile numbers



A typical mobile number in India is "+91 xxxx-nnnnnn". The first four digits initially indicated an operator's code, while the remaining six digits are unique to the subscriber. However, with mobile number portability in place, the first four digits no longer indicate a particular operator.




Short code


There are many businesses in the Indian market who rent keywords on a monthly basis, whose characters on a typical mobile phone keypad represent short codes. Short codes are five digits in length and have to start with the digit '5' like 58888 as of 2007. Previously, they were four-digit in number and could be of any combination, like 8888 or 7827. The current five digits can be extended by three digits further representing 3 additional characters. Messages sent to these short codes are commonly referred to as Premium Rate SMS Messages and have a cost per message depending on the operator as well as the service and the company.




Telemarketing


Telemarketers have been issued 10-digit telephone numbers starting with 140 (140XXXXXXX) by the Department of Telecommunications on TRAI's request.




Notes


1.^ The Chandigarh Capital Region is a metropolitan area that consists of areas in the union territory of Chandigarh, and the states of Punjab and Haryana.




References






External links


Department of Telecommunications, Government of India
Telecom Regulatory Authority of India
India National Numbering Plan of 2003

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