| Date | IP Address |
| 2016-12-15 | 151.101.44.133 (ClassC) |
| 2017-01-01 | 151.101.192.133 (ClassC) |
| 2017-04-30 | 151.101.0.133 (ClassC) |
| 2017-07-28 | 151.101.129.147 (ClassC) |
| 2017-08-16 | 151.101.1.147 (ClassC) |
| 2018-02-07 | 151.101.45.147 (ClassC) |
| 2018-04-17 | 151.101.185.147 (ClassC) |
| 2024-12-01 | 185.199.108.153 (ClassC) |
| 2025-08-02 | 185.199.109.153 (ClassC) |
| 2025-09-27 | 185.199.110.153 (ClassC) |
| 2026-01-09 | 185.199.111.153 (ClassC) |
| Date | Domain | IP |
| 2016.code4lib.org | 2024-12-27 | 185.199.108.153 |
| 2017.code4lib.org | 2024-12-01 | 185.199.108.153 |
| 2018.code4lib.org | 2024-12-23 | 185.199.110.153 |
| journal.code4lib.org | 2025-09-27 | 152.19.134.41 |
| www.code4lib.org | 2025-02-11 | 185.199.111.153 |