| Date | IP Address |
| 2021-01-12 | 13.249.130.123 (ClassC) |
| 2021-01-12 | 13.249.130.19 (ClassC) |
| 2021-01-12 | 13.249.130.23 (ClassC) |
| 2021-01-12 | 13.249.130.86 (ClassC) |
| 2026-01-09 | 45.60.86.81 (ClassC) |
| Date | Domain | IP |
| web.testing.endicia.com | 2025-11-15 | 45.60.86.81 |
| account.web.testing.endicia.com | 2026-01-09 | 45.60.86.81 |
| swsim.testing.endicia.com | 2025-08-13 | 13.56.147.15 |
| registration.testing.endicia.com | 2025-09-11 | 45.60.151.44 |
| api.trackshipment.testing.endicia.com | 2024-06-01 | 99.84.66.41 |
| print.testing.endicia.com | 2022-03-15 | 45.60.155.44 |