Service | Number |
| PSTN Call Center (for any queries related to landline telephone, ISDN etc. Also accessible from CellOne, Excel & Tarang phones) | 1500 |
| Kisan Call Center (for any queries related to agriculture) | 1551 |
Police | 100 |
Fire | 101 |
Ambulance | 102 |
Billing complaint center | 166 / 1660-69 |
Trunk booking | 1580 |
Trunk assistance | 1581 |
STD complaints | 1582 |
National Directory Enquiry (NDQ) Service | 1583 |
International trunk booking | 1586 |
International trunk enquiry | 1587 |
International Trunk delay information | 1588 |
Telex complaints | 1589 |
Directory enquiry service | 197 |
| Telephone Complaint Booking | 198 |
| Emergency Relief Centre on National Highways | 1033 |
| Relief Commissioners of Central/State/Union territory | 1070 |
| Control room of District Collector/Magistrate | 1077 |
Public Grievance Cell Telecom Circle HQs | 12727 |
Public Grievance Cell Kolkata/Chennai | 1095 |
Crime stopper cell of police in Kerala, Rajasthan, Andhra Pradesh & Mumbai | 1090 |
Women crisis response | 1091 |
Earth-quake Help line service | 1092 |
Natural disaster control room | 1096 |
AIDS help line service | 1097 |
Children in difficulty/ Child Distress Service | 1098 |
Catastrophe & Trauma service | 1099 |
| Free Phone Enquiry | 1600 |
| India Telephone Card Enquiry | 1602 |
Billing Complaint Center (Interactive Voice Response System) | 1671-73 |
| Maritime Search and Rescue control room of coastal guard | 1718 |
Blood bank information Service | 1910 |
Dial a doctor | 1911 |
Leased Circuits Fault Booking | 1918 |
Eye bank information service | 1919 |
Change number announcement (Hindi) | 1951 |
Changed number announcement (English) | 1952 |
Changed number announcement (Regional language) | 1953 |
Changed number announcement (in case of shift) | 1954 |
Sancharnet Internet Help desk service | 1957 |
Leased Circuit Fault Booking (WTR) | 1958 |
Some of the services are available in select cities only. Please check the