iP or domain name lookup

mail.21cn.net Server iP：

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domain resolution record：

2021-05-01-----2025-11-18 14.116.192.252

2021-05-01-----2025-11-18 14.18.89.106

2020-11-03-----2021-04-26 42.81.57.10

2020-11-03-----2021-04-26 42.81.57.6

2020-12-03-----2021-04-26 36.27.222.85

2020-12-09-----2021-04-26 36.27.222.89

2021-03-07-----2021-04-26 36.150.13.162

2021-03-08-----2021-04-26 36.150.13.169

2021-04-15-----2021-04-26 183.47.233.13

2021-04-16-----2021-04-26 183.131.208.21

2021-04-17-----2021-04-26 42.7.46.7

2021-04-24-----2021-04-26 117.161.104.34

2021-04-26-----2021-04-26 218.92.137.5

2021-04-26-----2021-04-26 42.228.133.136

2020-11-03-----2021-04-24 183.131.208.22

2020-11-03-----2021-04-24 42.81.57.7

2020-11-03-----2021-04-24 183.47.233.12

2020-11-03-----2021-04-24 36.27.222.67

2020-11-03-----2021-04-24 36.27.222.86

2020-11-03-----2021-04-24 42.81.57.13

2020-12-17-----2021-04-24 42.81.57.8

2021-01-22-----2021-04-24 183.134.25.13

2021-03-06-----2021-04-24 36.150.13.170

2021-04-03-----2021-04-24 218.92.137.8

2021-04-17-----2021-04-24 42.228.133.143

2021-04-24-----2021-04-24 180.97.232.94

2021-04-24-----2021-04-24 218.92.137.14

2021-04-24-----2021-04-24 42.228.133.138

2021-04-24-----2021-04-24 42.7.46.5

2021-04-24-----2021-04-24 117.161.111.134

2020-11-03-----2021-04-17 183.131.208.19

2020-12-03-----2021-04-17 36.27.222.90

2021-03-04-----2021-04-17 36.150.13.163

2021-03-06-----2021-04-17 36.150.13.164

2021-04-17-----2021-04-17 180.97.232.87

2020-12-17-----2021-04-16 183.47.233.10

2021-02-10-----2021-04-16 36.27.222.69

2021-03-04-----2021-04-16 36.150.13.168

2021-03-07-----2021-04-16 36.150.13.166

2021-04-15-----2021-04-16 218.92.137.11

2021-04-15-----2021-04-16 42.7.46.9

2021-04-16-----2021-04-16 42.228.133.147

2020-11-03-----2021-04-15 42.81.57.12

2020-11-03-----2021-04-15 36.27.222.87

2020-12-31-----2021-04-15 36.27.222.74

2021-03-27-----2021-04-15 36.150.13.172

2021-04-15-----2021-04-15 42.7.46.6

2021-04-15-----2021-04-15 183.134.25.12

2020-11-03-----2021-04-08 124.132.138.76

2020-12-03-----2021-04-08 124.132.138.85