| Date | IP Address |
| 2014-03-21 | 54.209.189.102 (ClassC) |
| 2014-04-03 | 107.23.193.11 (ClassC) |
| 2014-07-11 | 107.23.102.71 (ClassC) |
| 2014-12-18 | 54.165.148.181 (ClassC) |
| 2015-01-28 | 54.165.29.53 (ClassC) |
| 2016-06-09 | 52.90.174.192 (ClassC) |
| 2016-08-25 | 54.175.208.116 (ClassC) |
| 2016-09-11 | 52.90.163.15 (ClassC) |
| 2017-11-23 | 54.210.145.2 (ClassC) |
| 2018-12-12 | 54.221.41.53 (ClassC) |
| 2019-02-10 | 3.92.227.97 (ClassC) |
| 2019-02-21 | 54.89.175.152 (ClassC) |
| 2024-08-19 | 107.20.139.170 (ClassC) |
| 2026-02-18 | 107.20.139.176 (ClassC) |
| Date | Domain | IP |
| rfc.zeromq.org | 2013-12-21 | 107.23.193.11 |
| download.zeromq.org | 2025-10-14 | 54.220.192.176 |
| zguide.zeromq.org | 2014-01-06 | 107.23.193.11 |
| api.zeromq.org | 2014-11-08 | 54.165.29.53 |
| czmq.zeromq.org | 2014-04-03 | 107.23.193.11 |
| kr.zeromq.org | 2014-09-05 | 107.23.193.11 |
| www.zeromq.org | 2014-01-18 | 107.23.193.11 |