| AC | assessment center (skr.) |
|---|---|
| ATC | Asia and The Pacific Ocean Trade Center (skr.) |
| CASA | Center for Alternativ Samfundsanalyse (skr.) |
| MPC | minor planet center (skr.) |
| MPC | Minor Planet Center, stredisko pre planétky (angl.skr.) |
| NCC | Network Control Center (skr.) |