| IP | ホスト | 組織名 | メールアドレス | 備考 |
| 85.70.0.0〜85.71.255.255 | ***.***.broadband3.iol.cz | O2 Techzona | hostmaster@iol.cz | |
| ***.***.broadband4.iol.cz | postmaster@iol.cz | |||
| 90.179.64.0〜90.179.64.255 | ***.***.broadband12.iol.cz | |||
| 194.212.0.0〜194.212.255.255 | ***.***.212.194.contactel.net | GTS Novera | ripe@gtsnovera.cz | |
| abuse@contactel.cz | ||||
| ripe@gtsgroup.cz | ||||
| 89.102.150.0〜89.102.150.255 | ip-89-102-150-***.karneval.cz | Karneval | hostmaster@karneval.cz | |
| postmaster@karneval.cz | ||||
| 82.100.11.0〜82.100.11.255 | 11-***.grapesc.cz | GRAPE SC, a.s. | domeny@grapesc.cz | |
| info@grapesc.cz | ||||
| 213.192.48.0〜213.192.48.255 | unknown | TvujNet s.r.o | abuse@sloane.cz | |
| hotline@tvujnet.cz | ||||
