| Date | IP Address |
| 2022-03-14 | 52.201.157.18 (ClassC) |
| 2025-01-24 | 23.21.250.140 (ClassC) |
| 2025-09-23 | 34.232.242.84 (ClassC) |
| 2026-02-06 | 52.207.110.37 (ClassC) |
| Date | Domain | IP |
| probe-prod.ns1.slack-cert-renewal.com | 2025-01-29 | 54.158.150.236 |
| probe-dev.ns1.slack-cert-renewal.com | 2025-02-27 | 52.201.157.18 |
| probe-prod.slack-cert-renewal.com | 2025-02-27 | 52.44.244.115 |
| cf-prod.slack-cert-renewal.com | 2024-10-11 | 3.163.158.96 |
| dnssec-nsone.slack-cert-renewal.com | 2024-08-20 | 52.11.79.54 |
| probe-dev.slack-cert-renewal.com | 2025-01-24 | 23.21.250.140 |
| cf-dev.slack-cert-renewal.com | 2024-10-11 | 3.163.158.66 |