| Date | IP Address |
| 2018-07-27 | 165.254.94.244 (ClassC) |
| 2018-12-08 | 65.153.18.147 (ClassC) |
| 2019-02-01 | 63.238.216.232 (ClassC) |
| 2019-03-02 | 23.3.97.218 (ClassC) |
| 2019-03-02 | 23.35.150.104 (ClassC) |
| 2019-03-18 | 128.177.96.205 (ClassC) |
| 2019-09-06 | 23.220.96.80 (ClassC) |
| 2019-11-06 | 172.232.21.8 (ClassC) |
| 2019-12-11 | 104.114.79.32 (ClassC) |
| 2019-12-11 | 104.114.79.49 (ClassC) |
| 2019-12-27 | 23.56.168.8 (ClassC) |
| 2020-04-16 | 63.239.232.22 (ClassC) |
| 2020-04-16 | 63.239.232.35 (ClassC) |
| 2021-03-01 | 184.30.42.160 (ClassC) |
| 2021-03-01 | 184.30.42.195 (ClassC) |
| 2024-06-06 | 23.44.175.190 (ClassC) |
| 2024-06-11 | 23.55.167.32 (ClassC) |
| 2024-08-02 | 23.192.230.133 (ClassC) |
| 2024-08-23 | 23.54.19.146 (ClassC) |
| 2024-09-08 | 23.192.230.151 (ClassC) |
| 2025-01-11 | 23.46.228.178 (ClassC) |
| 2025-01-25 | 23.44.175.183 (ClassC) |
| Date | Domain | IP |
| dcns2.epa.gov | 2025-01-18 | 161.80.212.15 |
| www2.epa.gov | 2014-06-27 | 63.216.54.253 |
| www3.epa.gov | 2025-01-18 | 134.67.21.34 |
| data.epa.gov | 2025-01-18 | 161.80.73.54 |
| beta.epa.gov | 2023-08-25 | 18.161.6.115 |
| archive.epa.gov | 2025-01-18 | 134.67.21.34 |
| blog.epa.gov | 2019-04-11 | 13.249.142.11 |
| espanol.epa.gov | 2023-12-17 | 18.65.229.121 |
| awsrobinson.epa.gov | 2025-01-11 | 204.47.252.52 |
| bap.epa.gov | 2024-06-06 | 23.44.175.190 |
| developer.epa.gov | 2019-09-06 | 13.224.227.55 |
| water.epa.gov | 2015-03-21 | 63.236.252.171 |
| energystar.prod.es.epa.gov | 2025-01-11 | 204.47.252.17 |
| snapshot.epa.gov | 2025-01-11 | 134.67.21.34 |
| 19january2021snapshot.epa.gov | 2025-01-17 | 134.67.21.34 |
| cleanairnortheast.epa.gov | 2025-01-11 | 134.67.21.34 |
| lew.epa.gov | 2025-01-05 | 15.200.211.21 |
| www.epa.gov | 2024-06-22 | 99.84.66.53 |