| Date | IP Address |
| 2018-11-27 | 23.72.169.167 (ClassC) |
| 2024-03-24 | 122.147.244.120 (ClassC) |
| 2024-08-12 | 175.98.116.120 (ClassC) |
| 2024-11-10 | 23.54.32.34 (ClassC) |
| 2024-11-25 | 23.48.17.44 (ClassC) |
| 2025-09-12 | 23.201.22.18 (ClassC) |
| 2025-11-06 | 23.218.99.36 (ClassC) |
| 2026-02-11 | 23.47.181.16 (ClassC) |
| Date | Domain | IP |
| card.firstbank.com.tw | 2023-08-25 | 96.7.156.64 |
| ccard.firstbank.com.tw | 2024-10-22 | 175.98.116.22 |
| bankfree.firstbank.com.tw | 2025-01-17 | 23.48.17.44 |
| efpg.firstbank.com.tw | 2025-01-14 | 175.98.116.45 |
| ebank.firstbank.com.tw | 2024-03-24 | 122.147.244.120 |
| freebank.firstbank.com.tw | 2025-01-17 | 23.48.17.44 |
| ibank.firstbank.com.tw | 2024-11-12 | 210.200.30.63 |
| mbank.firstbank.com.tw | 2025-02-17 | 210.200.30.55 |
| mail.firstbank.com.tw | 2025-02-18 | 61.67.7.197 |
| eschool.firstbank.com.tw | 2024-03-29 | 210.200.30.42 |
| eatm.firstbank.com.tw | 2023-08-26 | 210.200.30.95 |
| firstloan.firstbank.com.tw | 2025-05-08 | 122.147.244.21 |
| pushotp.firstbank.com.tw | 2025-01-17 | 175.98.116.60 |
| wms.firstbank.com.tw | 2025-02-24 | 103.123.143.11 |
| mft.firstbank.com.tw | 2025-02-25 | 175.98.116.109 |
| efirst.firstbank.com.tw | 2025-02-25 | 122.147.244.13 |
| b2bgw.firstbank.com.tw | 2026-01-03 | 210.59.232.122 |
| www.firstbank.com.tw | 2023-08-25 | 96.7.156.64 |