iP or domain name lookup

usmr41.us.deloitte.com Server iP：

Current resolution：

domain resolution record：

2017-02-09-----2019-10-11 167.219.34.207

2017-02-09-----2019-10-11 167.219.34.208

2017-06-03-----2019-10-11 167.219.34.203

2017-06-03-----2019-10-11 167.219.34.204

2017-02-09-----2019-10-10 167.219.34.201

2017-02-09-----2019-10-10 167.219.34.209

2017-02-09-----2019-10-01 167.219.34.206

2017-02-09-----2019-07-13 167.219.34.205

2017-02-09-----2019-07-13 167.219.34.202

2017-02-09-----2017-07-16 167.219.34.199

2017-02-09-----2017-06-03 167.219.34.198

2017-06-03-----2017-06-03 167.219.34.200