1. whois
dilbert.com. 172800 IN NS dns01.uclick.com. dilbert.com. 172800 IN NS dns02.uclick.com. ;; ADDITIONAL SECTION: dns01.uclick.com. 172800 IN A 66.6.101.228 dns02.uclick.com. 172800 IN A 66.6.101.229
2. history
$ dig -t ns dilbert.com @66.6.101.228 ;; communications error to 66.6.101.228#53: timed out ;; communications error to 66.6.101.228#53: timed out ;; communications error to 66.6.101.228#53: timed out ; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t ns dilbert.com @66.6.101.228 ;; global options: +cmd ;; no servers could be reached