| Pfx | Operator |
|
| [akk] | AKK Net, Bytom |
| [aks] | Akselnet |
| [alb] | Albatros, Gliwice |
| [a-s] | Alfa-System |
| [all] | Alltex, Chorzów |
| [jaw] | ART-COM, Jaworzno |
| [asn] | Asnet, Bytom, Chorzów, Świętochłowice |
| [bmj] | BMJ, Gliwice |
| [bmk] | BMK, Bytom |
| [bre] | Brewet, Gliwice |
| [bsi] | Bytomskie Stowarzyszenie Internautów |
| [cmn] | Cemoss, Ruda Śląska |
| [wnc] | ComNet, Katowice |
| [c1] | CompNet, Bytom |
| [c2] | CompNet2, Bytom |
| [con] | Coner, Mikolow |
| [d2d] | D2 Direct, Ruda Śląska |
| [dsi] | Dąbrowskie Sieci Internetowe, Dąbrowa Górnicza |
| [dts] | DataSystem, Świętochłowice, Bytom |
| [dra] | Drama, Pyskowice |
| [eur] | Euronet, Chorzów |
| [for] | ForceNet, Katowice |
| [fox] | FoxNet, Bytom |
| [fsn] | Fusion, Katowice |
| [gal] | Galileusz, Bytom |
| [gmk] | GMK Elektronik s.c., Knurów |
| [gra] | Grakom |
| [com] | HardCom, Bytom, Ruda Śl, Pyskowice |
| [high] | Highnet, Radzionków |
| [hmn] | Home-Net, Siemianowice Śl. |
| [hux] | HUXNET, Paniówki |
| [ibs] | IBSAT, Sosnowiec |
| [imp] | Imperium, Gliwice |
| [inf] | Infocoig |
| [ibu] | InterBud, Radzionków, Piekary Śl. |
| [ipc] | INTERPC, Bytom |
| [int] | Interplus, Sosnowiec, Czeladź, K-ce |
| [joy] | Joy-Net, Bytom |
| [kam] | KAMPsys |
| [kol] | Kolista, Katowice |
| [kop] | Kopa-Net, Ruda Śląska |
| [kor] | Korant, Chorzów |