| Date | IP Address |
| 2024-10-20 | 52.60.173.6 (ClassC) |
| 2025-02-28 | 52.24.251.32 (ClassC) |
| 2026-01-27 | 34.243.56.93 (ClassC) |
| Date | Domain | IP |
| maintenance.csb.gc.ca | 2023-08-25 | 69.192.139.202 |
| csbonline.csb.gc.ca | 2025-02-28 | 204.104.133.69 |
| www.csbonline.csb.gc.ca | 2026-01-21 | 204.104.133.69 |
| update.csb.gc.ca | 2025-03-01 | 204.104.133.120 |
| www.update.csb.gc.ca | 2025-04-13 | 204.104.133.120 |
| e-campaign.csb.gc.ca | 2025-03-01 | 204.104.133.48 |
| www.e-campaign.csb.gc.ca | 2025-03-01 | 204.104.133.48 |
| employer.csb.gc.ca | 2025-04-25 | 204.104.133.67 |
| www.employer.csb.gc.ca | 2026-01-19 | 204.104.133.67 |
| www.e-campaign-it.csb.gc.ca | 2025-04-23 | 204.104.133.49 |
| www.csbdirect-it.csb.gc.ca | 2025-04-15 | 204.104.133.72 |
| www.transmit-it.csb.gc.ca | 2025-04-16 | 204.104.133.96 |
| transmit.csb.gc.ca | 2026-01-19 | 204.104.133.94 |
| www.transmit.csb.gc.ca | 2025-04-15 | 204.104.133.94 |
| www.employer-st.csb.gc.ca | 2025-02-28 | 204.104.133.79 |
| www.transmit-st.csb.gc.ca | 2025-04-15 | 204.104.133.98 |
| www.csb.gc.ca | 2014-02-07 | 65.126.84.25 |