| Date | IP Address |
| 2022-09-09 | 18.193.209.215 (ClassC) |
| 2025-11-20 | 18.185.216.5 (ClassC) |
| Date | Domain | IP |
| cooling.viessmann.co.uk | 2025-11-20 | 3.120.95.145 |
| cooling-campaign.viessmann.co.uk | 2025-11-20 | 18.185.216.5 |
| offer.viessmann.co.uk | 2024-11-25 | 23.54.19.136 |
| product-selector.viessmann.co.uk | 2024-11-24 | 23.46.17.43 |
| professionals.viessmann.co.uk | 2025-10-07 | 93.122.86.52 |
| t.viessmann.co.uk | 2025-05-13 | 34.111.102.177 |
| www.viessmann.co.uk | 2023-11-02 | 23.38.191.10 |