Nmap scan report for ns01.nr-dns.net (157.53.229.1) Host is up (0.011s latency). Other addresses for ns01.nr-dns.net (not scanned): 2607:f740:e61a::1 Not shown: 999 filtered tcp ports (no-response) PORT STATE SERVICE 53/tcp open domain Nmap done: 1 IP address (1 host up) scanned in 6.72 seconds