| Date | IP Address |
| 2014-06-21 | 74.125.198.121 (ClassC) |
| 2015-02-17 | 173.194.193.121 (ClassC) |
| 2025-12-17 | 52.184.200.53 (ClassC) |
| Date | Domain | IP |
| secure.scheduleonce.com | 2015-02-17 | 173.194.193.121 |
| help.scheduleonce.com | 2025-11-08 | 52.184.200.53 |
| app.scheduleonce.com | 2014-08-05 | 64.233.182.121 |