| Date | IP Address |
| 2026-02-16 | 13.111.49.21 (ClassC) |
| Date | Domain | IP |
| cpmxpfx01.energystar.gov | 2025-05-29 | 204.47.252.41 |
| cpmxpfx02.energystar.gov | 2025-09-08 | 204.47.252.42 |
| data.energystar.gov | 2024-09-11 | 52.206.140.199 |
| beta.energystar.gov | 2025-01-19 | 204.47.252.17 |
| search.energystar.gov | 2024-04-20 | 99.84.66.62 |
| essearch.energystar.gov | 2025-01-18 | 204.47.252.38 |
| auth.energystar.gov | 2025-04-26 | 3.175.34.52 |
| mail.energystar.gov | 2025-09-07 | 13.111.18.27 |
| mta.mail.energystar.gov | 2026-01-28 | 13.111.20.47 |
| cloud.mail.energystar.gov | 2025-11-16 | 13.111.47.23 |
| image.mail.energystar.gov | 2024-12-14 | 23.44.244.151 |
| click.mail.energystar.gov | 2025-09-08 | 13.111.48.21 |
| view.mail.energystar.gov | 2026-02-16 | 13.111.49.21 |
| cmadmin.energystar.gov | 2024-04-20 | 204.47.252.19 |
| portfoliomanager.energystar.gov | 2025-03-31 | 204.47.252.18 |
| downloads.energystar.gov | 2025-03-02 | 204.47.252.37 |
| eses.energystar.gov | 2025-02-05 | 204.47.252.39 |
| esws.energystar.gov | 2025-01-21 | 204.47.252.40 |
| www.energystar.gov | 2025-03-15 | 204.47.252.17 |