| Date | IP Address |
| 2013-11-11 | 67.203.90.60 (ClassC) |
| 2014-11-27 | 162.209.123.245 (ClassC) |
| 2015-03-10 | 162.216.40.134 (ClassC) |
| 2016-01-23 | 192.124.249.10 (ClassC) |
| 2017-06-15 | 104.154.143.100 (ClassC) |
| 2019-10-10 | 104.154.52.255 (ClassC) |
| 2025-11-07 | 141.193.213.10 (ClassC) |
| 2026-01-31 | 141.193.213.11 (ClassC) |
| Date | Domain | IP |
| www.ptc.org | 2013-08-01 | 67.203.90.60 |