타 네임서버에서의 TTL 값 확인 방법

nslookup으로 간단히 알아보는 방법이 있습니다.

[www@root] nslookup
>server ns.kornet.net
> ls -d bsuhak.com
[ns.kebia.net]
$ORIGIN bsuhak.com.
@                       1D IN SOA       www bsuhak (
                                        20000403        ; serial
                                        6H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        12H )           ; minimum

                        1D IN NS        ns.kor.net.
                        1D IN A         211.223.194.182
                        1D IN MX        0 @
www                     1D IN A         211.223.194.182
                        1D IN MX        0 @
@                       1D IN SOA       www bsuhak (
                                        20000403        ; serial
                                        6H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        12H )           ; minimum

>

위의 예를 보시면 TTL값설정이 12시간으로 설정되어 있음을 알 수있네요.

그럼.