iP or domain name lookup

www.nltk.org Server iP：

Current resolution：

domain resolution record：

2019-07-17-----2023-05-16 185.199.108.153

2019-07-17-----2023-05-16 185.199.110.153

2019-07-17-----2023-05-16 185.199.111.153

2019-07-17-----2023-05-16 185.199.109.153

2017-10-26-----2017-10-27 151.101.73.147

2017-10-26-----2017-10-27 151.101.197.147

2017-10-26-----2017-10-26 151.101.1.147

2017-10-26-----2017-10-26 151.101.9.147

2017-10-26-----2017-10-26 151.101.129.147

2017-10-26-----2017-10-26 151.101.77.147