[Linux] 도메인으로 IP 확인

host

# host yahoo.com yahoo.com has address 98.139.183.24 yahoo.com has address 206.190.36.45 yahoo.com has address 98.138.253.109 yahoo.com mail is handled by 1 mta5.am0.yahoodns.net. yahoo.com mail is handled by 1 mta6.am0.yahoodns.net. yahoo.com mail is handled by 1 mta7.am0.yahoodns.net.

ping

# ping google.com -c 1 PING google.com (173.194.127.110) 56(84) bytes of data. 64 bytes from hkg03s12-in-f14.1e100.net (173.194.127.110): icmp_seq=1 ttl=52 time=68.7 ms --- google.com ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 133ms rtt min/avg/max/mdev = 68.767/68.767/68.767/0.000 ms

nslookup

# nslookup google.com Server: 8.8.8.8 Address: 8.8.8.8#53 Non-authoritative answer: Name: google.com Address: 173.194.127.102 Name: google.com Address: 173.194.127.103 Name: google.com Address: 173.194.127.98 Name: google.com Address: 173.194.127.110 Name: google.com Address: 173.194.127.99 Name: google.com Address: 173.194.127.104 Name: google.com Address: 173.194.127.101 Name: google.com Address: 173.194.127.97 Name: google.com Address: 173.194.127.105 Name: google.com Address: 173.194.127.100 Name: google.com Address: 173.194.127.96

nslookup명령어는 반대로 ip를 입력해 dns를 확인할 수도 있습니다. 그러나 ip를 입력해 dns를 반드시 찾을 수 있는 것은 아닙니다. IP만 있고, 도메인과 연결하지 않은 컴퓨터도 있기 때문입니다.