Unknown calls from India
Few phone markets are as busy as India's, and the volume of unsolicited calls matches it. Loan offers, credit-card upsells, insurance pitches and real-estate promotions arrive daily, often from ordinary 10-digit mobile numbers rather than registered telemarketing series. Mixed in with that noise are far more dangerous calls: fraudsters posing as police, customs, courier firms or bank staff who try to frighten people into paying or sharing an OTP. Because a missed call from an unfamiliar number could equally be a delivery agent, a hospital or a scammer, many Indians check a number before ringing back, and search the digits to see whether others have flagged them as spam.
India phone numbers at a glance
- Country calling code
- +91
- Trunk prefix
- 0
- Number format
- Mobile numbers have 10 digits and begin with 6, 7, 8 or 9. Landlines combine an STD area code (2–4 digits) with a subscriber number for 10 digits in total; a leading 0 is added for domestic long-distance calls.
- Example (national)
- 098765 43210
- Example (international)
- +91 98765 43210
- Emergency number
- 112 (national emergency number); 100 police, 101 fire, 108 ambulance in most states
- Telecom regulator
- Telecom Regulatory Authority of India (TRAI)
To call a Indian number from abroad, drop the leading 0 and dial +91 first: 098765 43210 becomes +91 98765 43210. A missed call showing +91 at the start came from a India number.
How to tell what kind of Indian number called you
Mobile numbers
| Type | Starts with | Notes |
|---|---|---|
| Mobile (6 series) | 6 | Newer 10-digit mobile allocations; issued by all major operators. |
| Mobile (7 series) | 7 | 10-digit mobile numbers. Mobile number portability means the first digits no longer reliably identify the operator. |
| Mobile (8 and 9 series) | 8 / 9 | The longest-established mobile ranges; 9-series numbers date back to the early days of Indian mobile service. |
Toll-free, premium and special numbers
| Type | Starts with | Notes |
|---|---|---|
| Toll-free | 1800 | Free to call; widely used by banks, airlines and government helplines. |
| Customer care (non-toll-free) | 1860 | Business helpline numbers charged to the caller rather than free. |
| Registered telemarketing | 140 | Series allocated by TRAI to registered telemarketers for promotional voice calls. |
| Service and transactional calls | 160 | Series introduced by TRAI for service and transactional calls from entities such as banks and regulated financial firms. |
Mobile networks in India
Numbers can be ported between networks, so the prefix alone does not prove which carrier a number is on today. A WhoCallsMe lookup reads the current carrier of record. The main mobile operators are:
- Jio
- Airtel
- Vi (Vodafone Idea)
- BSNL
