iP or domain name lookup

keepalive.utvpn.tsukuba.ac.jp Server iP：

Current resolution：

domain resolution record：

2016-11-10-----2024-08-14 54.76.135.1

2016-11-10-----2024-08-14 23.89.5.60

2016-11-10-----2024-08-14 130.158.6.56

2016-11-10-----2024-08-14 189.163.17.5

2019-04-30-----2024-08-14 188.5.4.96

2019-04-30-----2024-08-14 49.2.123.56

2019-04-30-----2024-08-14 253.157.14.165

2019-06-03-----2024-08-14 77.4.7.92

2019-07-04-----2024-08-14 118.5.49.6

2019-07-04-----2024-08-14 249.129.46.48

2019-07-04-----2024-08-14 197.4.4.12