| Date | IP Address |
| 2019-09-20 | 23.201.81.100 (ClassC) |
| 2023-01-26 | 104.106.25.34 (ClassC) |
| 2023-08-25 | 23.55.199.184 (ClassC) |
| 2024-10-02 | 23.209.30.87 (ClassC) |
| 2024-11-25 | 23.59.151.202 (ClassC) |
| 2025-01-23 | 23.54.38.71 (ClassC) |
| 2025-01-29 | 23.39.23.133 (ClassC) |
| 2025-07-15 | 104.18.10.239 (ClassC) |
| 2025-08-21 | 104.18.11.239 (ClassC) |
| 2026-02-01 | 104.21.2.216 (ClassC) |
| Date | Domain | IP |
| staging.armstrongworldindustries.com | 2025-07-16 | 204.74.19.207 |
| investors.armstrongworldindustries.com | 2025-08-04 | 162.159.129.11 |
| www.armstrongworldindustries.com | 2023-08-25 | 23.55.199.184 |