List of the top 20 organizations with the largest IP allocations in South Africa
| Rank | Name | IPv4 addresses | IPv6 /64 networks | AS numbers | Prefixes |
|---|---|---|---|---|---|
| Cell C (Pty) Ltd | 6,894,592 | 0 | 1 | 44 | |
| Dimension Data | 6,025,216 | 1.53 x 238 | 4 | 351 | |
| Telkom SA Ltd. | 4,756,513 | 1.01 x 244 | 5 | 2,040 | |
| 4 | MTN SA | 4,286,208 | 1.01 x 233 | 2 | 119 |
| 5 | Vodacom | 2,896,128 | 1.09 x 233 | 2 | 259 |
| 6 | TENET (The UNINET Project) | 2,145,024 | 232 | 2 | 400 |
| 7 | Liquid Telecommunications South Africa (Pty) Ltd | 1,529,088 | 232 | 1 | 45 |
| 8 | Africa on Cloud | 1,193,728 | 233 | 1 | 106 |
| 9 | SITA Pty LTD | 531,200 | 0 | 1 | 27 |
| 10 | Vox Telecom Ltd | 446,720 | 232 | 1 | 226 |
| 11 | Afrihost (Pty) Ltd | 436,480 | 1.13 x 236 | 1 | 13 |
| 12 | HERO TELECOMS (PTY) LTD | 355,072 | 235 | 1 | 386 |
| 13 | Cybersmart | 353,024 | 236 | 1 | 20 |
| 14 | RAIN GROUP HOLDINGS (PTY) LTD | 337,152 | 233 | 3 | 49 |
| 15 | University of the Free State | 264,192 | 1.25 x 218 | 1 | 13 |
| 16 | RSAWEB (PTY) LTD | 211,200 | 236 | 1 | 154 |
| 17 | North West University | 196,608 | 217 | 1 | 49 |
| 18 | Metrofibre Networx | 195,072 | 1.08 x 224 | 1 | 34 |
| 19 | Eskom Holdings SOC Ltd | 186,880 | 0 | 1 | 221 |
| 20 | Business Connexion Communications | 154,880 | 0 | 1 | 41 |