| Date | IP Address |
| 2023-08-26 | 104.86.225.110 (ClassC) |
| 2024-08-01 | 23.193.88.55 (ClassC) |
| 2024-09-03 | 104.68.117.215 (ClassC) |
| 2024-09-25 | 23.198.170.121 (ClassC) |
| 2024-10-31 | 23.195.237.27 (ClassC) |
| 2025-02-05 | 104.71.168.143 (ClassC) |
| 2025-03-26 | 184.26.148.128 (ClassC) |
| 2025-04-30 | 104.90.248.56 (ClassC) |
| 2025-07-13 | 23.195.237.32 (ClassC) |
| 2025-07-25 | 95.101.160.248 (ClassC) |
| Date | Domain | IP |
| cob.cms.hhs.gov | 2023-08-25 | 104.86.244.169 |
| imp.cob.cms.hhs.gov | 2023-08-25 | 104.86.244.169 |
| www.imp.cob.cms.hhs.gov | 2023-08-25 | 104.86.244.169 |
| dev.cob.cms.hhs.gov | 2023-08-25 | 104.86.244.169 |
| www.dev.cob.cms.hhs.gov | 2023-08-25 | 104.86.244.169 |
| www.cob.cms.hhs.gov | 2023-08-25 | 104.86.244.169 |
| esmdcloud-val.cms.hhs.gov | 2025-02-18 | 52.202.229.127 |
| webinar.cms.hhs.gov | 2024-06-03 | 52.21.100.40 |
| rds.cms.hhs.gov | 2023-08-26 | 104.86.225.110 |
| imp.rds.cms.hhs.gov | 2023-08-26 | 104.86.225.110 |
| www.imp.rds.cms.hhs.gov | 2023-08-26 | 104.86.225.110 |
| dev.rds.cms.hhs.gov | 2023-08-26 | 104.86.225.110 |
| www.dev.rds.cms.hhs.gov | 2023-08-26 | 104.86.225.110 |
| www.rds.cms.hhs.gov | 2023-08-26 | 104.86.225.110 |
| nppes.cms.hhs.gov | 2024-08-01 | 3.163.24.123 |
| esmdc2-uat.cms.hhs.gov | 2025-05-06 | 13.248.180.104 |
| esmdc-uat.cms.hhs.gov | 2025-03-01 | 52.86.110.85 |
| esmdcloud-dev.cms.hhs.gov | 2024-05-03 | 44.198.85.31 |
| www.cms.hhs.gov | 2024-09-14 | 23.48.17.107 |
| npiregistry.cms.hhs.gov | 2025-03-05 | 18.238.238.24 |