| Date | IP Address |
| 2013-09-28 | 192.88.209.244 (ClassC) |
| 2019-12-03 | 128.237.30.13 (ClassC) |
| 2026-01-02 | 147.72.252.242 (ClassC) |
| Date | Domain | IP |
| kb.cert.org | 2024-05-12 | 3.163.165.34 |
| www.kb.cert.org | 2024-02-06 | 3.163.24.73 |
| vince.cert.org | 2025-10-18 | 3.175.34.67 |
| securecoding.cert.org | 2025-12-29 | 147.72.252.206 |
| www.securecoding.cert.org | 2025-12-28 | 147.72.252.206 |
| forms.cert.org | 2024-07-14 | 99.84.66.108 |
| www.cert.org | 2019-12-03 | 128.237.30.13 |