| Date | IP Address |
| 2021-06-16 | 13.249.75.107 (ClassC) |
| 2021-06-16 | 13.249.75.43 (ClassC) |
| 2021-06-16 | 13.249.75.57 (ClassC) |
| 2021-07-27 | 99.84.64.89 (ClassC) |
| 2024-09-13 | 99.84.66.15 (ClassC) |
| 2024-11-06 | 18.161.6.75 (ClassC) |
| 2025-01-24 | 65.8.161.22 (ClassC) |
| 2025-04-17 | 99.84.66.61 (ClassC) |
| 2025-06-23 | 3.175.34.76 (ClassC) |
| 2025-07-06 | 18.238.217.40 (ClassC) |
| 2025-11-06 | 3.175.34.4 (ClassC) |
| 2026-03-02 | 3.175.34.116 (ClassC) |
| Date | Domain | IP |
| helpdesk.irhythmtech.com | 2025-10-19 | 162.159.140.147 |
| clinicalhelpdesk.irhythmtech.com | 2026-03-02 | 172.66.0.145 |
| email-images.irhythmtech.com | 2021-07-27 | 99.84.64.89 |
| investors.irhythmtech.com | 2024-10-23 | 162.159.129.11 |
| www.irhythmtech.com | 2024-11-26 | 199.60.103.28 |