iP or domain name lookup

help.courier.com Server iP：

Current resolution：

domain resolution record：

2025-02-27-----2026-01-14 66.33.60.66

2025-02-27-----2026-01-14 76.76.21.22

2025-02-27-----2026-01-14 66.33.60.194

2025-02-27-----2026-01-14 76.76.21.123

2025-02-27-----2026-01-14 66.33.60.130

2025-02-27-----2026-01-14 76.76.21.61

2025-02-27-----2026-01-14 66.33.60.129

2025-03-14-----2026-01-14 76.76.21.164

2025-03-14-----2026-01-14 66.33.60.35

2025-03-14-----2026-01-14 66.33.60.34

2026-01-14-----2026-01-14 76.76.21.93

2025-02-27-----2025-03-14 76.76.21.142

2025-02-27-----2025-03-14 76.76.21.241

2025-02-27-----2025-03-14 66.33.60.67

2025-03-14-----2025-03-14 66.33.60.193

2025-03-14-----2025-03-14 76.76.21.98

2023-09-27-----2023-09-27 13.225.183.38

2023-09-27-----2023-09-27 13.32.121.94

2023-09-27-----2023-09-27 13.224.249.72

2023-09-27-----2023-09-27 108.138.246.71

2023-08-18-----2023-08-18 108.138.246.88

2023-08-18-----2023-08-18 13.225.183.100

2023-08-18-----2023-08-18 13.32.121.29

2023-08-18-----2023-08-18 13.224.249.8

2023-03-20-----2023-03-20 13.227.62.53

2023-03-20-----2023-03-20 13.224.167.95

2023-03-20-----2023-03-20 99.86.207.126

2023-03-20-----2023-03-20 99.86.207.36

2023-03-20-----2023-03-20 65.8.11.90

2023-03-20-----2023-03-20 13.225.114.40

2023-03-20-----2023-03-20 13.32.121.85

2023-03-20-----2023-03-20 13.35.125.73

2023-03-20-----2023-03-20 13.33.5.4

2023-03-20-----2023-03-20 13.33.5.50

2023-03-20-----2023-03-20 13.225.165.114

2023-03-20-----2023-03-20 13.227.62.97