| Date | IP Address |
| 2018-10-30 | 46.19.218.36 (ClassC) |
| 2019-09-18 | 185.40.97.94 (ClassC) |
| 2026-02-14 | 171.22.67.16 (ClassC) |
| Date | Domain | IP |
| smtp1.runningholland.nl | 2025-06-29 | 171.22.67.16 |
| relay1.runningholland.nl | 2025-09-03 | 171.22.67.16 |
| mail2.runningholland.nl | 2025-07-12 | 171.22.67.16 |
| smtp2.runningholland.nl | 2025-09-12 | 171.22.67.16 |
| gate.runningholland.nl | 2025-09-20 | 171.22.67.16 |
| mailgate.runningholland.nl | 2025-08-19 | 171.22.67.16 |
| m.runningholland.nl | 2025-07-09 | 171.22.67.16 |
| antispam.runningholland.nl | 2025-07-19 | 171.22.67.16 |
| demo.runningholland.nl | 2025-09-12 | 171.22.67.16 |
| server.runningholland.nl | 2026-01-01 | 171.22.67.16 |
| ms.runningholland.nl | 2025-09-09 | 171.22.67.16 |
| mailhost.runningholland.nl | 2025-08-25 | 171.22.67.16 |
| www.runningholland.nl | 2026-02-14 | 171.22.67.16 |
| mx.runningholland.nl | 2025-07-16 | 171.22.67.16 |
| box.runningholland.nl | 2025-08-16 | 171.22.67.16 |
| mbox.runningholland.nl | 2025-09-21 | 171.22.67.16 |
| relay.runningholland.nl | 2025-08-21 | 171.22.67.16 |