Bulk SMS Identification @ India

You have been receiving SMS codes: TA-ICICI, AX-Airtel… and wondering what’s it?

Recently, from almost a month SMSs from Banks, Service Providers, Companies have started prefixing something like ID, AT, VK…etc. What’s all this after all!!? Lets see what it is! Normally these SMSs originates from a Bulk SMS provider where you can use 11 digit Alpha-Numeric characters as “Sender”.

But there were some security risks in this method. I was able to give a phone number as “Sender” & it appears as that person at the recipient end. Basically there was a chance to send SMSs as a different person! was actually using this to fool friends??.But the new TRAI regulation insisted bulk SMS providers to restrict the “Sender ID” to 8 characters. Other three characters should be used to specify who is the service provider & where it’s originated from. Say for example: HDFCBANK sends an SMS to you using bulk SMS provider located at Tamil Nadu which uses Airtel. You will receive it as AT-HDFCBANK. First character specifies which service provider the message is being originated & the second character specifies from which location it’s originated. Here is the table which has details of these SMS codes: Service Provider Codes:

Service Provider Code

Aircel, Dishnet Wireless D
Bharti Airtel A
BSNL B
BPL Mobile/Loop Telecom L
Datacom Solutions C
HFCL Infotel H
Idea Cellular I
MTNL M
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 Group V

Service Area Code
Andhra Pradesh A
Assam 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

So, combination of these two constitutes the first two digit of Sender followed by an hyphen (-) & actual sender name. This help to regulate DNB (Do not distrub) registery.

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2 Responses to Bulk SMS Identification @ India

  1. Abhishek says:

    Glad to know this… thanks for the post.

  2. Neel Pandey says:

    Useful posts for those who want to know why this prefix was added as told it is used to regulate DND rules but at the same time it is also used for tracking down the message so that one could make out from the sender from which smsc it had actually received sms to take care of spam messaging from smsc.

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