| Date | IP Address |
| 2026-01-05 | 98.136.103.21 (ClassC) |
| Date | Domain | IP |
| gamma.login.yahoo.com | 2025-12-26 | 98.136.103.21 |
| beta.login.yahoo.com | 2025-08-01 | 98.136.103.21 |
| guce.login.yahoo.com | 2024-02-06 | 44.230.117.164 |
| stage.guce.login.yahoo.com | 2024-10-04 | 52.40.155.5 |
| trunk.guce.login.yahoo.com | 2025-04-11 | 35.83.53.242 |
| mobile.login.yahoo.com | 2025-08-05 | 74.6.160.138 |
| credstore.login.yahoo.com | 2025-12-26 | 98.136.147.15 |
| api.login.yahoo.com | 2025-12-26 | 74.6.160.138 |
| gamma.api.login.yahoo.com | 2025-12-04 | 98.136.103.21 |
| beta.api.login.yahoo.com | 2026-01-05 | 98.136.103.21 |
| canary.api.login.yahoo.com | 2026-01-01 | 98.136.144.161 |
| jsapi.login.yahoo.com | 2015-03-12 | 98.139.21.169 |
| myaccount.login.yahoo.com | 2025-08-10 | 74.6.160.138 |