Details about the 2 Digit Short codes Prefixed in Promotional SMS

You must have noticed, since last couple of weeks, every promotional SMS that you receive has a 2 digit alphabets. Have you ever wondered what are they? Those are the short code of the state and service provider that you are receiving the promotional SMSs from.

As per a recent notification issued by TRAI, it has been made mandatory for service providers to prefix the state and service provider code where the SMS originates from. For example, you receive an SMS from “AM-SBI” it means, the SMS was originated from Bharti Airtel, Mumbai and has been sent on request of SBI. You can check out the complete list of codes assigned to each service provider and service area, below.

Here is the complete list of the codes assigned to various operators and service areas:

Service Provider


Aircel, Dishnet Wireless D
Bharti Airtel A
BPL Mobile/Loop Telecom L
Datacom Solutions C
HFCL Infotel H
Idea Cellular I
Reliance Communications R
Reliance Telecom E
S tel S
Shyam Telecom Y
Spice Telecom P
Swan Telecom W
Tata Teleservices T
Unitech Group U
Vodafone V

Service Area


Andhra Pradesh A
Andhra Pradesh S
Bihar B
Delhi D
Gujarat G
Haryana H
Himachal Pradesh I
Jammu & Kashmir J
Karnataka X
Kerala L
Kolkata K
Madhya Pradesh Y
Maharashtra Z
Mumbai M
North East N
Orissa O
Punjab P
Rajasthan R
Tamil Nadu T
UP-East E
UP-West W
West Bengal V

Do come back on this page to check out where SMS originates from that spam your inbox. 😉


  1. Sumit Reply

    very cool piece of info indeed…i was always amazed what those 2 characters meant………superb man……

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