| AAT | Average Access Time |
|---|---|
| ABAI | sídlo v Paraguaji |
| ABR | Average Bandwidth Requirement |
| AC | average cost (skr.), priemerné náklady (angl.skr.) |
| ADT | Average Daily Traffic |
| AEI | Average Efficiency Index |
| AER | Average Event Rate |
| ALRAUN | korienok rastliny mandragora |
| AN | Nikaragua (MOL), Nikaragua - označenie lietadiel |
| ANN | tlačová agentúra Nikaraguy |