The Area Codes of India:
| City/Town or Region | Area code | |
|---|---|---|
| 1. | Thiruvananthapuram, Kerala | 471 (+91 471) |
| 2. | Thrissur, Kerala | 487 (+91 487) |
| 3. | Tiruchirappalli, Tamil Nadu | 431 (+91 431) |
| 4. | Tirupati, Andhra Pradesh | 877 (+91 877) |
| 5. | Tiruppur, Tamil Nadu | 421 (+91 421) |
| 6. | Tirur, Kerala | 494 (+91 494) |
| 7. | Tumkur, Karnataka | 816 (+91 816) |