iP or domain name lookup

mws.amazonservices.ca Server iP：

Current resolution：

domain resolution record：

2017-04-01-----2021-08-16 54.239.25.189

2019-07-15-----2021-08-16 52.46.156.188

2021-07-09-----2021-08-16 52.46.142.199

2018-03-21-----2020-07-22 52.94.234.210

2017-04-01-----2018-03-21 54.239.25.238

2017-04-01-----2017-04-01 54.239.24.6