# What is NRTRDE (Near Real Time Roaming Data Exchange)?

> NRTRDE (Near Real Time Roaming Data Exchange), defined in GSMA TD.35, requires a visited operator to send roaming usage records to the home operator within four hours of the event — far faster than the daily TAP file. Its purpose is fraud control: high-value roaming fraud such as SIM-box or premium-rate abuse can run up huge losses before a daily TAP cycle would surface it, so NRTRDE shortens the detection window. See /answers/what-is-tap and /answers/telecom-fraud-prevention.

- Canonical URL: https://www.broadnet.me/answers/what-is-nrtrde
- Language: en
- Last reviewed: 2026-07-22
- Publisher: BroadNet (https://www.broadnet.me)

## Related

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- [What is TAP (Transferred Account Procedure)?](https://www.broadnet.me/answers/what-is-tap)
- [How does telecom fraud prevention work?](https://www.broadnet.me/answers/telecom-fraud-prevention)
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