| Service | Code | Provider | |--------|------|----------| | | *57 | All BSNL/MTNL landlines (PSTN) | | Call Trace (Airtel landline) | *57 | Works only if caller ID is enabled. | | Cancel Trace | #57# | BSNL | | Police Reporting Code | Dial 100 after *57 | Nationwide |
Disclaimer: Telecom codes change. Always verify with your specific provider and dial a test call to 611 (customer service) before relying on NTR for an actual emergency. ntr phone codes full
This article provides the —what they are, how they work, and the exact codes to dial for every major telecom provider. What Are NTR Phone Codes? NTR stands for Nuisance Trace Relay. It is a feature (usually free) offered by landline and VoIP providers that allows you to automatically trace the last incoming call, even if the caller hung up or blocked their number. The system works retroactively: you dial a specific code immediately after a nuisance call, and the phone company captures the caller’s metadata (number, time, date) for law enforcement. | Service | Code | Provider | |--------|------|----------|
| Service | Code | Notes | |--------|------|-------| | | *57 | Dial immediately after a nuisance call. You will hear a confirmation tone/recording. | | Automatic Nuisance Trace (Some RBOCs) | *77 | Rare; used in limited Bell System areas pre-2000. | | Cancel Nuisance Trace | *87 | Cancels a pending trace request. Not available on all lines. | | Ancillary NTR (Business lines – AT&T) | *67 + 1-800-xxx-xxxx | Not a direct code; requires call forwarding to a trace center. | | CenturyLink NTR | *57 | Same as standard. | | Verizon Landline NTR | *57 | After dialing, follow voice prompts. | | Cox Digital Telephone | *57 | Works on home phone via coax. | Important: After dialing *57 in the US/Canada, you must hang up and then call your provider’s nuisance bureau or local police. The code stores the trace; it does not identify the number to you for privacy reasons. United Kingdom (BT, Sky, TalkTalk, Virgin Media) The UK uses a different system: "Call Trace" service (similar to NTR) with code *57 as well, plus an access code for BT’s Nuisance Call Bureau. This article provides the —what they are, how