| Date | IP Address |
| 2026-01-17 | 167.206.2.201 (ClassC) |
| Date | Domain | IP |
| uwc.webmail.optimum.net | 2025-12-13 | 167.206.4.107 |
| prod.webmail.optimum.net | 2026-01-09 | 167.206.13.48 |
| webtop.webmail.optimum.net | 2025-10-03 | 167.206.12.54 |
| vm.webtop.webmail.optimum.net | 2026-01-17 | 167.206.2.201 |
| b1sc-rul3s.webmail.optimum.net | 2025-09-02 | 167.206.2.195 |
| b1sc-r0ks.webmail.optimum.net | 2025-12-29 | 167.206.2.197 |
| preview.webmail.optimum.net | 2026-01-13 | 167.206.4.106 |
| stage.new.webmail.optimum.net | 2025-10-26 | 66.54.17.113 |