Registro IPv4
host: ntp1.glb.nist.gov
class: IN
ttl: 74
type: A
ip: 132.163.97.2

host: time.nist.gov
class: IN
ttl: 81
type: CNAME
target: ntp1.glb.nist.gov

Registro IPv6
host: ntp1.glb.nist.gov
class: IN
ttl: 55
type: AAAA
ipv6: 2610:20:6f15:15::27