Servidores DNS Principal (mname) y Secundario (rname)
host: naver.jp
class: IN
ttl: 600
type: SOA
mname: ns1.naver.jp
rname: domain.linecorp.com
serial: 1768957992
refresh: 3578
retry: 600
expire: 604800
minimum-ttl: 3600

Información TXT
host: naver.jp
class: IN
ttl: 90
type: TXT
txt: v=spf1 include:naver.com include:spf.naver.jp ~all
entries: Array