| Date | IP Address |
| 2020-02-21 | 173.223.14.145 (ClassC) |
| 2023-02-11 | 23.2.94.76 (ClassC) |
| 2023-08-25 | 2.19.142.66 (ClassC) |
| 2023-09-09 | 104.94.77.31 (ClassC) |
| 2024-06-25 | 104.97.45.70 (ClassC) |
| 2024-08-02 | 104.71.213.90 (ClassC) |
| 2024-11-24 | 23.218.185.6 (ClassC) |
| 2025-01-11 | 23.197.237.130 (ClassC) |
| 2025-04-07 | 184.27.179.122 (ClassC) |
| 2025-05-03 | 184.31.197.9 (ClassC) |
| Date | Domain | IP |
| cert.staging-x1.letsencrypt.org | 2023-08-25 | 2.19.142.66 |
| cert.stg-int-x1.letsencrypt.org | 2023-08-25 | 23.37.222.138 |
| ocsp.int-x1.letsencrypt.org | 2023-12-28 | 23.219.78.167 |
| cert.int-x1.letsencrypt.org | 2023-08-25 | 23.37.222.138 |
| cert.stg-root-x1.letsencrypt.org | 2023-08-25 | 2.19.142.66 |
| crl.root-x1.letsencrypt.org | 2023-08-25 | 23.37.222.138 |
| cp.root-x1.letsencrypt.org | 2023-08-25 | 2.19.142.66 |
| ocsp.root-x1.letsencrypt.org | 2024-01-14 | 23.219.78.177 |
| cps.root-x1.letsencrypt.org | 2023-08-25 | 23.37.222.138 |
| cert.root-x1.letsencrypt.org | 2023-08-25 | 23.37.222.138 |
| ocsp.int-x2.letsencrypt.org | 2024-04-27 | 23.219.78.167 |
| cert.int-x2.letsencrypt.org | 2023-08-25 | 2.19.142.66 |
| ocsp.int-x3.letsencrypt.org | 2019-08-05 | 104.86.183.80 |