iP or domain name lookup

bt.591yy.com Server iP：

Current resolution：

domain resolution record：

2025-09-15-----2025-09-15 104.26.5.148

2021-09-25-----2021-12-06 154.218.48.178

2019-12-12-----2019-12-12 79.124.78.101

2019-12-12-----2019-12-12 79.124.78.105

2017-09-04-----2017-09-05 183.136.206.130

2017-09-04-----2017-09-04 101.71.103.138