| Date | IP Address |
| 2017-11-11 | 23.215.131.194 (ClassC) |
| 2019-03-06 | 23.50.52.58 (ClassC) |
| 2019-06-22 | 23.56.175.145 (ClassC) |
| 2019-07-05 | 184.28.156.8 (ClassC) |
| 2019-12-10 | 23.56.168.225 (ClassC) |
| 2019-12-26 | 172.232.13.105 (ClassC) |
| 2020-02-13 | 104.104.137.32 (ClassC) |
| 2020-04-21 | 165.254.95.2 (ClassC) |
| 2020-08-29 | 69.192.7.193 (ClassC) |
| 2021-01-02 | 104.119.188.161 (ClassC) |
| 2022-05-13 | 184.28.93.26 (ClassC) |
| 2022-11-25 | 23.192.220.12 (ClassC) |
| 2024-10-23 | 162.159.129.11 (ClassC) |
| 2026-01-24 | 162.159.130.11 (ClassC) |
| Date | Domain | IP |
| helpdesk.irhythmtech.com | 2025-10-19 | 162.159.140.147 |
| clinicalhelpdesk.irhythmtech.com | 2026-01-16 | 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 |