| SLD | Second Level Domain |
| TLD | Top Level Domain Internet-Adresse |
| Internet-TLD | Internet - Top Level Domain |
| GTLD | Generic Top Level Domain |
| iTLD | international Top Level Domain |
| CCLD | Country Code Level Domain [engl.] Namensändung bei Internet-Adressen |
| CCTLD | Country Code Top Level Domain [engl.] Ländercodes im Internet |
| CENTR | Council of European National Top level domain Registries |
| IDN | Internationalized Domain Name |
| DC | Domain Controller |
| DOI | Domain Of Interpretation |
| PD | Public Domain |
| DW | Domain Wall Physikbegriff im Magnetismus und in der String-Theorie |
| DNS | Domain Name System Hierachische Datenbank, einer der zentralen Dienste im Internet |
| DDNS | Dynamic Domain Name System |
| PRMD | Private Management Domain [X.400] |
| DNSO | Domain Name Supporting Organization |
| SDS | Stripe Domain Structure |
| DMD | Directory Management Domain |
| CSD | Cold Shock Domain Kälteschockdomäne, Chemie |
| SDC | Secondary Domain Controller |
| DMO | Domain Management Organisation |
| DCDB | Domain Controller Database |
| DCP | Domain Control Point |
| DNRC | Domain Name Rights Coalition |
| CDNC | Chinese Domain Name Consortium |
| AD | Administrative Domain [engl.] Verwaltungsbezirk |
| IDI | Initial Domain Identifier |
| IDI | Initial Domain Identifier |
| TDX | Time Domain Crosstalk |
| TDR | Time Domain Reflectometry Zeitbereichsreflektometrie |
| DMB | Domain Master Browser |
| IDP | Initial Domain Part |
| GDOI | Group Domain Of Interpretation |
| PDC | Primary Domain Controller |
| PDS | Public Domain Software |
| DSP | Domain Specific Part |
| DDA | Domain Defined Attribute |
| TDHS | Time Domain Harmonic Scaling |
| OTDR | Optical Time Domain Reflectometer |
| FQDN | Fully Qualified Domain Name [Internet] |
| DSEE | Domain Software Engineering Environment [HP] |
| MVA | Multi-domain Vertical Alignment |
| GOV | Government, Internet-Domain: Behörden in USA |
| DIPS | Dual Domain In Plane Switching |
| BDC | Backup Domain Computer [engl.] |
| ARPA | alte Arpanet-Domain, Webseitenkennung |
| BIND | Berkely Internet Name Domain [engl.] |
| CIDR | Classless Internet Domain Routing |
| COM | commercial, Internet-Domain: Firmen in USA kommerzielle, Webseitenkennung |