INTERNET SYSTEMS CONSORTIUM
Distribution of Top-Level Domain Names by Host Count, Jan 2006
| Domain | Hosts | All Hosts | Dup Names | Level 2 Domains | Level 3 Domains |
| TOTAL | 394991609 | 458497336 | 63505727 | 3064400 | 87212076 |
| net | 171346396 | 174654486 | 3308090 | 228093 | 54423541 | Networks |
| com | 69578775 | 116041415 | 46462640 | 1885165 | 14652451 | Commercial |
| jp | 24903795 | 25044349 | 140554 | 38524 | 362632 | Japan |
| it | 11222960 | 11279864 | 56904 | 33494 | 448958 | Italy |
| de | 9852798 | 10013373 | 160575 | 157261 | 1473206 | Germany |
| edu | 9806021 | 10054012 | 247991 | 4545 | 3269165 | Educational |
| nl | 7258159 | 14976121 | 7717962 | 50801 | 988262 | Netherlands |
| arpa | 7202233 | 7819210 | 616977 | 10 | 5147 | Mistakes |