iP or domain name lookup

sipdir.online.lync.com Server iP：

Current resolution：

domain resolution record：

2024-03-11-----2024-03-11 52.112.64.11

2018-10-18-----2023-02-28 52.113.64.147

2021-06-10-----2023-02-28 52.113.64.78

2021-08-20-----2021-09-27 52.112.70.139

2021-09-27-----2021-09-27 52.112.192.139

2016-11-24-----2021-08-20 52.112.64.75

2021-06-22-----2021-06-22 52.112.65.27

2021-06-22-----2021-06-22 52.112.196.11

2019-10-05-----2019-10-05 52.113.66.75

2019-06-25-----2019-06-25 52.113.66.11

2016-11-24-----2018-03-05 52.113.65.139

2016-11-24-----2017-02-16 52.113.64.139

2016-11-24-----2016-11-24 131.253.161.203