| Date | IP Address |
| 2017-05-13 | 54.241.147.209 (ClassC) |
| 2019-04-15 | 52.8.142.75 (ClassC) |
| 2019-04-15 | 54.193.95.69 (ClassC) |
| 2020-01-27 | 54.241.186.254 (ClassC) |
| 2020-01-27 | 54.241.184.60 (ClassC) |
| 2021-04-21 | 184.72.8.173 (ClassC) |
| 2021-04-21 | 54.67.31.167 (ClassC) |
| 2021-11-01 | 54.193.197.233 (ClassC) |
| 2021-11-01 | 54.183.91.88 (ClassC) |
| 2025-02-08 | 52.8.109.73 (ClassC) |
| 2025-03-24 | 52.52.209.166 (ClassC) |
| 2025-05-05 | 52.52.177.231 (ClassC) |
| 2025-08-01 | 13.56.94.180 (ClassC) |
| 2025-09-02 | 52.9.76.229 (ClassC) |
| 2025-11-20 | 52.8.154.181 (ClassC) |
| 2026-02-20 | 54.67.123.159 (ClassC) |
| 2026-02-26 | 54.219.181.145 (ClassC) |
| Date | Domain | IP |
| app-ap-southeast-2-australia.checkster.com | 2024-10-05 | 54.206.231.130 |
| randstadusa.checkster.com | 2025-02-08 | 52.8.109.73 |
| app-eu-central-1-europe.checkster.com | 2024-03-25 | 18.197.255.107 |
| prod-bi.checkster.com | 2025-10-29 | 3.226.37.44 |
| eu-integration.checkster.com | 2025-01-26 | 99.86.38.127 |
| matomo.checkster.com | 2024-09-30 | 52.53.109.129 |
| app.checkster.com | 2023-08-16 | 54.177.65.16 |
| au-app.checkster.com | 2024-10-05 | 13.54.76.135 |
| www.checkster.com | 2024-05-13 | 199.60.103.30 |