| Abbreviation | Definition |
|---|---|
| NPI | Numbering Plan Identifier |
| NPO | Network Performance Optimization |
| NPTF | Number Portability Task Force |
| NPTG | Number Portability Trunk Group |
| NPTH | Namibia Post And Telecom Holdings |
| NPTH | Namibia Post and Telecommunication Holdings |
| NPTH | Namibia Post and Telecommunications Holdings |
| NPTH | Namibia Posts And Telecom Holdings |
| NRA | National Roaming Agreement |
| NRC | Network Reliability Center |
| NRC | Non-Recurring Charge |
| NRT | Near-Real-Time |
| NRT | Nokia Ring Tone |
| NRTC | National Rural Telecommunications Cooperative |
| NRZ | Non-Return to Zero |
| NSA | Non-Service Affecting |
| NSC | Network Service Center |
| NSI | Network Service Interface |
| NSN | No Such Number |
| NSS | National Service Scheme |