| Date | IP Address |
| 2018-10-30 | 128.121.3.2 (ClassC) |
| 2026-01-03 | 104.18.3.98 (ClassC) |
| 2026-01-20 | 104.18.2.98 (ClassC) |
| Date | Domain | IP |
| data.nfpa.org | 2025-06-15 | 104.18.3.98 |
| static.nfpa.org | 2024-11-19 | 161.47.147.139 |
| manage.nfpa.org | 2025-08-22 | 104.18.2.98 |
| codesonline.nfpa.org | 2026-01-03 | 104.18.3.98 |
| www.codesonline.nfpa.org | 2025-12-30 | 161.47.147.136 |
| institute.nfpa.org | 2025-12-23 | 104.18.2.98 |
| training.nfpa.org | 2025-09-12 | 104.18.3.98 |
| catalog.nfpa.org | 2024-11-19 | 76.76.21.9 |
| nfpatoday.blog.nfpa.org | 2014-04-22 | 199.27.76.185 |
| safety.blog.nfpa.org | 2014-04-22 | 199.27.76.185 |
| research.nfpa.org | 2025-08-15 | 104.18.3.98 |
| content.mi.nfpa.org | 2024-10-18 | 18.238.217.45 |
| link.nfpa.org | 2024-12-29 | 34.237.183.35 |