| Abbreviation | Definition |
|---|---|
| NRA | Nominal Rate Of Assistance |
| NRAT | Network Risk Assessment Tool |
| NRB | Network Report Builder |
| NRBN | Niagara Regional Broadband Network |
| NRBN | Noisy Random Boolean Network |
| NRCP | Network Responsibility Compliance Program |
| NRCP | Network Responsibility & Compliance Program |
| NRG | Networking Research Group |
| NRLC | Networking Research Liaison Council ( Internet2) |
| NRS | No Registry Search |
| NRTS | Network Relay Test System |
| NRU | Not Recently Used |
| NS | Name Server |
| NS | Network Server |
| NSA | Network System Authority |
| NSAP | Network Service Access Point |
| NSB | Network Subscription Broadcast |
| NSC | Network Systems Corporation |
| NSCD | Name Service Caching Daemon |
| NSD | Name Server Daemon |