www.optrotech.com Server iP：
Current resolution：
domain resolution record：
2025-10-05-----2025-12-16 107.148.142.139
2024-11-19-----2024-11-20 154.201.198.250
2023-04-14-----2023-07-25 182.160.8.110
2019-09-13-----2019-11-08 162.159.208.73
2019-09-13-----2019-11-08 162.159.209.73
2019-09-13-----2019-09-27 111.32.136.148
2019-09-13-----2019-09-27 58.211.137.122
2019-09-13-----2019-09-27 42.236.94.115
2019-09-27-----2019-09-27 117.34.14.122
2019-09-13-----2019-09-13 150.138.151.122
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