| Date | IP Address |
| 2015-06-05 | 23.23.255.27 (ClassC) |
| 2015-06-30 | 23.21.247.21 (ClassC) |
| 2015-08-06 | 54.243.169.242 (ClassC) |
| 2015-11-17 | 54.204.1.154 (ClassC) |
| 2016-02-15 | 54.83.3.141 (ClassC) |
| 2016-05-08 | 23.21.113.232 (ClassC) |
| 2016-07-11 | 50.17.238.188 (ClassC) |
| 2016-07-25 | 107.22.230.79 (ClassC) |
| 2016-08-29 | 50.16.242.182 (ClassC) |
| 2016-11-10 | 54.197.246.21 (ClassC) |
| 2016-12-07 | 54.225.68.99 (ClassC) |
| 2016-12-27 | 107.20.224.23 (ClassC) |
| 2017-01-16 | 23.23.162.52 (ClassC) |
| 2017-01-31 | 107.22.241.33 (ClassC) |
| 2017-03-09 | 23.23.165.47 (ClassC) |
| 2017-06-05 | 54.243.221.47 (ClassC) |
| 2017-08-27 | 23.23.135.126 (ClassC) |
| 2024-06-21 | 204.246.191.118 (ClassC) |
| 2024-09-13 | 204.246.191.111 (ClassC) |
| 2024-11-11 | 204.246.191.95 (ClassC) |
| 2025-01-14 | 3.163.158.107 (ClassC) |
| Date | Domain | IP |
| blog.rubykaigi.org | 2013-06-03 | 66.6.40.49 |
| regional.rubykaigi.org | 2024-06-21 | 204.246.191.118 |
| sapporo.rubykaigi.org | 2015-03-24 | 54.225.175.94 |
| sponsorships.rubykaigi.org | 2024-07-31 | 18.161.6.56 |
| www.rubykaigi.org | 2024-11-24 | 3.163.158.8 |