When we receive sms the sender id would be like this BH-ZUBRIX. Here the first two characters of the sender id, that is BH. B as in BSNL services, hence this is a Telecom Operator Code and H as in Haryana, hence this is Regional Code. For example below is the table.
| Provider | Code | Region | Code |
|---|---|---|---|
| Airtel | A | Andhra Pradesh | A |
| BSNL | B | Bihar | B |
| Datacom Solutions | C | Delhi | D |
