| 2804:4c0:ffff:ffa1:: | 2804:4c0:ffff:ffa1:ffff:ffff:ffff:ffff | CONSTRUTORA NORBERTO ODEBRECHT S A |
| 2804:4c0:ffff:ffa2:: | 2804:4c0:ffff:ffa2:ffff:ffff:ffff:ffff | Serviços de Petróleo Constellation S/A |
| 2804:4c0:ffff:ffa3:: | 2804:4c0:ffff:ffa3:ffff:ffff:ffff:ffff | SENCINET LATAM BRASIL LTDA |
| 2804:4c0:ffff:ffa4:: | 2804:4c0:ffff:ffa5:ffff:ffff:ffff:ffff | Centrais Eletricas do Norte do Brasil |
| 2804:4c0:ffff:ffa6:: | 2804:4c0:ffff:ffa6:ffff:ffff:ffff:ffff | Laboratório Nacional de Computação Científica |
| 2804:4c0:ffff:ffa7:: | 2804:4c0:ffff:ffa7:ffff:ffff:ffff:ffff | Cirion Technologies do Brasil Ltda. |
| 2804:4c0:ffff:ffa8:: | 2804:4c0:ffff:ffa9:ffff:ffff:ffff:ffff | G-LAB Telecom Informatica LTDA - ME |
| 2804:4c0:ffff:ffaa:: | 2804:4c0:ffff:ffaa:ffff:ffff:ffff:ffff | Cirion Technologies do Brasil Ltda. |
| 2804:4c0:ffff:ffab:: | 2804:4c0:ffff:ffab:ffff:ffff:ffff:ffff | S. O. do Brasil Telecomunicações LTDA ME |
| 2804:4c0:ffff:ffac:: | 2804:4c0:ffff:ffac:ffff:ffff:ffff:ffff | OptiTel Ltda |