| Property | Value |
| domain-groups@hubspot.com |
| Date | IP Address |
| 2013-05-26 | 96.45.82.196 (ClassC) |
| 2015-03-09 | 23.215.61.51 (ClassC) |
| 2015-03-09 | 23.215.61.42 (ClassC) |
| 2025-03-02 | 104.21.48.1 (ClassC) |
| 2025-04-16 | 104.21.80.1 (ClassC) |
| 2025-04-19 | 104.21.64.1 (ClassC) |
| 2025-06-21 | 104.21.96.1 (ClassC) |
| 2025-07-31 | 104.21.32.1 (ClassC) |
| 2025-09-13 | 104.21.16.1 (ClassC) |
| 2026-01-03 | 172.67.196.9 (ClassC) |
| 2026-02-19 | 104.21.92.164 (ClassC) |
| Date | Domain | IP |
| firstgiving.per.fm | 2014-03-13 | 165.254.206.67 |
| eclipseppm.per.fm | 2014-03-24 | 205.234.218.41 |
| 38634-at-hubspot.per.fm | 2015-04-15 | 184.86.240.89 |
| ux-at-hubspot.per.fm | 2025-03-02 | 52.202.120.229 |