| 1 | AS37271 | Workonline Communications | 134 | 4 | 2 | 1 |
| 2 | AS60171 | AFR-IX Telecom | 121 | 8 | 33 | 10 |
| 3 | AS3741 | NTT DATA, IS, South Africa | 65 | 4 | 487 | 3 |
| 4 | AS16637 | MTN South Africa | 60 | 6 | 210 | 3 |
| 5 | AS328748 | Agile Solutions Provider | 39 | 4 | 12 | 3 |
| 6 | AS37497 | Network Platforms | 39 | 6 | 4 | 1 |
| 7 | AS5713 | Telkom SA | 38 | 6 | 67 | 2 |
| 8 | AS327782 | Metrofibre Networx (PTY) Ltd | 31 | 2 | 27 | 15 |
| 9 | AS25818 | CMC Networks | 29 | 21 | 56 | 14 |
| 10 | AS36994 | Vodacom | 28 | 3 | 122 | 6 |
| 11 | AS327693 | Echo Service Provider | 27 | 2 | 5 | 1 |
| 12 | AS10798 | Standard Bank of South Africa | 23 | 23 | 82 | 0 |
| 13 | AS36874 | Cybersmart Ltd | 22 | 3 | 5 | 1 |
| 14 | AS37179 | SEACOM Managed Services SA | 18 | 2 | 9 | 1 |
| 15 | AS328333 | Fixed Mobile Telecommunications | 18 | 3 | 2 | 1 |
| 16 | AS37239 | ICTGlobe Management (Pty) Ltd | 17 | 3 | 103 | 1 |
| 17 | AS37153 | xneelo (Formerly Hetzner SA) | 16 | 5 | 46 | 3 |
| 18 | AS37358 | BitCo | 15 | 3 | 22 | 1 |
| 19 | AS11845 | Vox Telecom | 13 | 2 | 146 | 1 |
| 20 | AS37680 | Cool Ideas Service Provider Pty Ltd | 13 | 5 | 22 | 2 |
| 21 | AS37236 | Reflex Solutions (Pty) Ltd | 12 | 2 | 12 | 6 |
| 22 | AS328888 | ORCA TECHNOLOGIES | 11 | 1 | 4 | 1 |
| 23 | AS22355 | Frogfoot Networks | 11 | 3 | 3 | 1 |
| 24 | AS37739 | Abantu Cloud Africa (Pty) Ltd | 9 | 1 | 8 | 4 |
| 25 | AS32437 | Edge Connect | 9 | 1 | 4 | 1 |
| 26 | AS2018 | Tertiary Education and Research Network of South Africa | 8 | 2 | 375 | 14 |
| 27 | AS36937 | Liquid Telecom SA | 8 | 1 | 22 | 1 |
| 28 | AS32653 | eNetworks | 8 | 2 | 11 | 5 |
| 29 | AS327767 | Ultimate Linux Solutions | 8 | 3 | 5 | 2 |
| 30 | AS41033 | D2 CLOUD COMMUNICATIONS | 8 | 2 | 4 | 7 |
| 31 | AS201341 | Tesonet Ltd | 7 | 6 | 185 | 3 |
| 32 | AS36916 | X-Dsl Networking Solutions | 7 | 4 | 60 | 5 |
| 33 | AS37314 | inq. | 7 | 1 | 16 | 5 |
| 34 | AS329643 | IO FROM AFRICA (PTY) LTD | 7 | 2 | 5 | 1 |
| 35 | AS37105 | rain Networks | 6 | 3 | 32 | 7 |
| 36 | AS328366 | FirstNet | 6 | 3 | 12 | 4 |
| 37 | AS329097 | SI Futures (Pty) Ltd | 6 | 6 | 10 | 0 |
| 38 | AS328884 | BLUE ITS BUSINESS SOLUTIONS (PTY) LTD | 6 | 1 | 4 | 0 |
| 39 | AS329276 | LNX Solutions (Pty) Ltd | 6 | 3 | 4 | 3 |
| 40 | AS327983 | Interworks Connectivity Solutions | 6 | 1 | 3 | 1 |
| 41 | AS328471 | HERO TELECOMS | 5 | 3 | 197 | 29 |
| 42 | AS14115 | ABSA | 5 | 5 | 56 | 0 |
| 43 | AS37315 | CipherWave | 5 | 2 | 47 | 4 |
| 44 | AS37611 | Afrihost | 5 | 2 | 19 | 4 |
| 45 | AS327935 | iSPACE | 5 | 3 | 15 | 0 |
| 46 | AS328112 | AllWorldIT ZA | 5 | 3 | 12 | 7 |
| 47 | AS36983 | WEBHOST LIMITED | 5 | 5 | 10 | 0 |
| 48 | AS327849 | RocketNet | 5 | 3 | 9 | 5 |
| 49 | AS37114 | gateway-ng-as | 5 | 5 | 5 | 0 |
| 50 | AS37172 | Mitsol (Pty) Ltd | 5 | 2 | 5 | 1 |
| 51 | AS33764 | AFRINIC | 5 | 2 | 4 | 4 |
| 52 | AS329206 | Rackzar (Pty) Ltd | 5 | 2 | 4 | 1 |
| 53 | AS37474 | JINX Operations/Route Collector | 5 | 2 | 3 | 1 |
| 54 | AS329305 | GLOBAL CLOUD INFRASTRUCTURE SOLUTIONS (PTY) LTD | 5 | 1 | 3 | 1 |
| 55 | AS37515 | iConnectSA | 4 | 2 | 50 | 0 |
| 56 | AS327824 | Converged Telecoms | 4 | 2 | 38 | 17 |
| 57 | AS329303 | Splizr Networks (Pty) Ltd | 4 | 1 | 10 | 1 |
| 58 | AS328631 | TWC Hosting | 4 | 2 | 9 | 0 |
| 59 | AS15022 | Adept Internet | 4 | 1 | 7 | 2 |
| 60 | AS23058 | Discovery Health | 4 | 4 | 7 | 0 |
| 61 | AS37542 | Iclix | 4 | 2 | 7 | 1 |
| 62 | AS328512 | Backspace Technologies | 4 | 2 | 7 | 2 |
| 63 | AS37673 | Telemasters | 4 | 1 | 6 | 0 |
| 64 | AS329089 | Boost Networks Pty Ltd | 4 | 3 | 6 | 0 |
| 65 | AS328365 | ZANOG | 4 | 3 | 5 | 2 |
| 66 | AS37618 | Telemedia | 4 | 3 | 4 | 1 |
| 67 | AS328962 | Watchtower Bible and Tract Society of South Africa | 4 | 0 | 0 | 4 |
| 68 | AS20011 | NTT DATA, Broadband, South Africa | 3 | 1 | 719 | 3 |
| 69 | AS37121 | Eskom Holdings | 3 | 3 | 221 | 0 |
| 70 | AS7020 | Business Connexion | 3 | 2 | 41 | 0 |
| 71 | AS37276 | VOConnect | 3 | 1 | 29 | 1 |
| 72 | AS37028 | FNB Connect | 3 | 3 | 26 | 0 |
| 73 | AS327839 | Woolworths(Proprietary) Ltd | 3 | 2 | 25 | 0 |
| 74 | AS329184 | Host Africa (Pty) Ltd | 3 | 3 | 23 | 1 |
| 75 | AS328576 | Surf4Life | 3 | 2 | 21 | 17 |
| 76 | AS10474 | Optinet, South Africa | 3 | 1 | 18 | 0 |
| 77 | AS327897 | ATEC Systems & Technologies | 3 | 1 | 18 | 0 |
| 78 | AS327791 | Centracom | 3 | 2 | 16 | 0 |
| 79 | AS328029 | Web Telecom Services (PTY) Ltd | 3 | 2 | 15 | 2 |
| 80 | AS328106 | UNIWISP | 3 | 3 | 13 | 0 |
| 81 | AS327804 | Trusc | 3 | 3 | 12 | 1 |
| 82 | AS327943 | Mezobyte | 3 | 2 | 12 | 0 |
| 83 | AS37235 | Mimecast South Africa | 3 | 3 | 9 | 1 |
| 84 | AS328041 | Hollywood Sportsbook Holdings | 3 | 2 | 9 | 0 |
| 85 | AS328114 | Comsol Networks | 3 | 2 | 9 | 1 |
| 86 | AS328270 | WTTX Communications | 3 | 2 | 9 | 0 |
| 87 | AS329126 | IIP1 Pty Ltd | 3 | 3 | 9 | 1 |
| 88 | AS329429 | Data Sciences Corporation Pty Ltd | 3 | 2 | 8 | 2 |
| 89 | AS328266 | Atomic Access | 3 | 3 | 7 | 4 |
| 90 | AS36943 | 1-grid.com | 3 | 3 | 6 | 1 |
| 91 | AS37564 | Wirulink Pty Ltd | 3 | 2 | 6 | 17 |
| 92 | AS213481 | Hevis Co Systems PTY LTD | 3 | 2 | 6 | 11 |
| 93 | AS11744 | Investecbank | 3 | 3 | 5 | 0 |
| 94 | AS37403 | Info-Gro (PTY) Ltd | 3 | 2 | 5 | 1 |
| 95 | AS327988 | CAPITEC BANK | 3 | 3 | 5 | 1 |
| 96 | AS328334 | Phoenix Quest | 3 | 1 | 5 | 9 |
| 97 | AS328423 | Linux Tech | 3 | 3 | 5 | 2 |
| 98 | AS328900 | Takealot Online RF (Pty) Ltd | 3 | 2 | 4 | 0 |
| 99 | AS329106 | CCI SOUTH AFRICA (PTY) LTD | 3 | 3 | 4 | 0 |
| 100 | AS37650 | CM Value Added Services | 3 | 1 | 3 | 3 |
Autonome Systeme in Südafrika