| Date | IP Address |
| 2020-05-13 | 174.142.214.42 (ClassC) |
| 2022-01-04 | 44.231.203.76 (ClassC) |
| 2024-04-22 | 104.22.56.186 (ClassC) |
| 2024-04-29 | 172.67.26.156 (ClassC) |
| 2024-05-06 | 104.22.57.186 (ClassC) |
| 2025-09-19 | 172.66.40.150 (ClassC) |
| 2026-02-14 | 172.66.43.106 (ClassC) |
| Date | Domain | IP |
| secure2.bookonline.com | 2025-11-22 | 172.66.43.106 |
| compare-static.bookonline.com | 2025-12-05 | 18.161.6.111 |
| compare.bookonline.com | 2024-12-19 | 35.155.25.126 |
| secure.bookonline.com | 2025-09-19 | 104.16.160.115 |
| autodiscover.bookonline.com | 2026-01-02 | 172.66.40.150 |
| www.bookonline.com | 2025-07-20 | 172.66.43.106 |