Don’t Trust Every SMS – Check the Last Letter First
We all receive SMS from banks, apps, or unknown numbers. But do you notice the last letter in the sender name like:
JD-AXISBK-SAX-ICICIT-SAD-TRAIND-G
That one letter at the end (S, G, P, T, Z, X) tells you what type of message it is. It’s part of a rule made by TRAI to help people stay safe from fraud.
📌 What That Last Letter Means
| Letter | Message Type |
|---|---|
| S | Service (e.g. delivery, bank alerts) |
| G | Government info or scheme |
| P | Promotions and marketing |
| T | Transactional (e.g. OTPs, bills) |
| X/Z | Suspicious or fake sources |
These postfix letters are only given to registered businesses on the official TRAI DLT platform (Distributed Ledger Technology). This system ensures that only verified senders can use these headers.
⚠️ Important Notes
- If there’s no postfix letter, there is a high chance the SMS is from a scammer.
- Scammers can’t use official postfix like
-S,-T, or-G, because they need to register with TRAI-DLT, which they usually avoid. - Real businesses follow TRAI rules and send messages through verified routes.
✅ Quick Tips to Stay Safe
- Always check the last letter in SMS sender ID
- Don’t click links from IDs ending in X, Z, or with no postfix at all
- Never share OTP or bank details through SMS
- Report fraud SMS to 1909 or cybercrime.gov.in
Just 1 second to check the last letter — it can save you from fraud.