| Date | IP Address |
| 2021-02-09 | 52.4.31.184 (ClassC) |
| 2021-02-09 | 52.20.73.82 (ClassC) |
| 2024-07-08 | 54.197.238.215 (ClassC) |
| 2024-10-06 | 54.225.59.254 (ClassC) |
| 2024-11-09 | 52.2.93.74 (ClassC) |
| 2024-12-28 | 52.207.40.172 (ClassC) |
| 2025-05-04 | 44.221.120.199 (ClassC) |
| 2025-05-07 | 44.208.54.131 (ClassC) |
| 2025-06-24 | 3.227.196.138 (ClassC) |
| 2025-07-16 | 34.237.108.2 (ClassC) |
| 2025-08-22 | 34.201.212.20 (ClassC) |
| 2025-12-10 | 54.166.126.89 (ClassC) |
| 2026-01-18 | 54.205.200.229 (ClassC) |
| Date | Domain | IP |
| imap1.frncomunicacao.com.br | 2024-07-28 | 52.72.76.242 |
| ns1.frncomunicacao.com.br | 2026-01-01 | 3.225.252.1 |
| imap2.frncomunicacao.com.br | 2021-02-10 | 52.4.31.184 |
| auth.frncomunicacao.com.br | 2024-07-07 | 54.209.211.130 |
| email.frncomunicacao.com.br | 2024-07-08 | 54.197.238.215 |
| mailin.frncomunicacao.com.br | 2025-12-31 | 52.205.221.42 |