| Date | IP Address |
| 2024-04-13 | 177.54.145.109 (ClassC) |
| 2024-05-26 | 177.54.145.106 (ClassC) |
| 2024-11-24 | 177.54.145.108 (ClassC) |
| 2024-12-14 | 177.54.145.107 (ClassC) |
| 2025-01-09 | 177.54.145.110 (ClassC) |
| Date | Domain | IP |
| api.letras.mus.br | 2021-01-16 | 104.100.131.206 |
| m.letras.mus.br | 2023-08-25 | 104.100.168.104 |
| www.letras.mus.br | 2023-08-04 | 23.53.122.143 |
| m.sandbox.letras.mus.br | 2024-11-24 | 177.54.145.107 |