| Date | IP Address |
| 2025-11-21 | 205.251.198.99 (ClassC) |
| Date | Domain | IP |
| uat-hoyaus-apigw.external.lab.exchangesolutions.com | 2025-08-23 | 3.220.21.198 |
| ns-11.dns.lab.exchangesolutions.com | 2025-11-21 | 205.251.195.67 |
| ns-21.dns.lab.exchangesolutions.com | 2025-11-21 | 205.251.194.195 |
| ns-12.dns.lab.exchangesolutions.com | 2025-11-21 | 205.251.192.165 |
| ns-22.dns.lab.exchangesolutions.com | 2025-11-21 | 205.251.198.99 |
| ns-13.dns.lab.exchangesolutions.com | 2025-11-21 | 205.251.197.97 |
| ns-23.dns.lab.exchangesolutions.com | 2025-10-14 | 205.251.192.61 |
| ns-14.dns.lab.exchangesolutions.com | 2025-11-21 | 205.251.199.32 |
| ns-24.dns.lab.exchangesolutions.com | 2025-10-14 | 205.251.197.142 |