| Date | IP Address |
| 2023-08-25 | 104.86.244.169 (ClassC) |
| 2024-01-05 | 104.112.182.60 (ClassC) |
| 2024-02-19 | 184.24.148.233 (ClassC) |
| 2024-07-02 | 23.196.205.88 (ClassC) |
| 2024-08-06 | 104.96.163.139 (ClassC) |
| 2024-09-03 | 23.41.4.10 (ClassC) |
| 2024-09-14 | 23.41.4.74 (ClassC) |
| 2024-10-28 | 23.41.4.81 (ClassC) |
| 2024-12-22 | 23.54.19.154 (ClassC) |
| 2024-12-25 | 23.41.4.76 (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 |
| 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 | 2024-10-24 | 13.248.180.104 |
| esmdcloud-dev.cms.hhs.gov | 2024-05-03 | 44.198.85.31 |
| www.cms.hhs.gov | 2024-08-31 | 23.54.32.95 |
| npiregistry.cms.hhs.gov | 2024-08-30 | 99.84.66.118 |