Registro IPv4
host: utb.edu
class: IN
ttl: 300
type: A
ip: 129.113.37.144

Servidores DNS Principal (mname) y Secundario (rname)
host: utb.edu
class: IN
ttl: 3600
type: SOA
mname: ns1.utrgv.edu
rname: syshelp.utrgv.edu
serial: 2017100730
refresh: 3600
retry: 600
expire: 2592000
minimum-ttl: 3600