dig命令详解
1.查看域名的A记录
# dig yahoo.com; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <<>> yahoo.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<
2.查看域名的ip
# dig yahoo.com +short
98.139.183.24
72.30.38.140
98.138.253.109
3.查看域名的MX 记录
# dig yahoo.com MX
; <> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <> yahoo.com MX
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31450
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 24
;; QUESTION SECTION:
;yahoo.com. IN MX
;; ANSWER SECTION:
yahoo.com. 33 IN MX 1 mta6.am0.yahoodns.net.
yahoo.com. 33 IN MX 1 mta7.am0.yahoodns.net.
yahoo.com. 33 IN MX 1 mta5.am0.yahoodns.net.
4.查看域名的SOA记录
# dig yahoo.com SOA
; <> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <> yahoo.com SOA
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2197
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 7, ADDITIONAL: 7
;; QUESTION SECTION:
;yahoo.com. IN SOA
;; ANSWER SECTION:
yahoo.com. 1800 IN SOA ns1.yahoo.com. hostmaster.yahoo-inc.com. 2012081409 3600 300 1814400 600
5.查询域名的TTL记录
# dig yahoo.com TTL
; <> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <> yahoo.com TTL
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56156
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;yahoo.com. IN A
;; ANSWER SECTION:
yahoo.com. 3589 IN A 98.138.253.109
yahoo.com. 3589 IN A 98.139.183.24
yahoo.com. 3589 IN A 72.30.38.140
6.查看内容信息
# dig yahoo.com +nocomments +noquestion +noauthority +noadditional +nostats
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6 <<>> yahoo.com +nocomments +noquestion +noauthority +noadditional +nostats
;; global options: +cmd
yahoo.com. 3442 IN A 72.30.38.140
yahoo.com. 3442 IN A 98.138.253.109
yahoo.com. 3442 IN A 98.139.183.24
7.查询所有的DNS记录类型
# dig yahoo.com ANY +noall +answer
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6 <<>> yahoo.com ANY +noall +answer
;; global options: +cmd
yahoo.com. 3509 IN A 72.30.38.140
yahoo.com. 3509 IN A 98.138.253.109
yahoo.com. 3509 IN A 98.139.183.24
yahoo.com. 1709 IN MX 1 mta5.am0.yahoodns.net.
yahoo.com. 1709 IN MX 1 mta6.am0.yahoodns.net.
yahoo.com. 1709 IN MX 1 mta7.am0.yahoodns.net.
yahoo.com. 43109 IN NS ns2.yahoo.com.
yahoo.com. 43109 IN NS ns8.yahoo.com.
yahoo.com. 43109 IN NS ns3.yahoo.com.
yahoo.com. 43109 IN NS ns1.yahoo.com.
yahoo.com. 43109 IN NS ns4.yahoo.com.
yahoo.com. 43109 IN NS ns5.yahoo.com.
yahoo.com. 43109 IN NS ns6.yahoo.com.
8.DNS反向查询
# dig -x 72.30.38.140 +short
ir1.fp.vip.sp2.yahoo.com.
9.查询多个DNS记录
# dig yahoo.com mx +noall +answer redhat.com ns +noall +answer
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6 <<>> yahoo.com mx +noall +answer redhat.com ns +noall +answer
;; global options: +cmd
yahoo.com. 1740 IN MX 1 mta6.am0.yahoodns.net.
yahoo.com. 1740 IN MX 1 mta7.am0.yahoodns.net.
yahoo.com. 1740 IN MX 1 mta5.am0.yahoodns.net.
redhat.com. 132 IN NS ns1.redhat.com.
redhat.com. 132 IN NS ns4.redhat.com.
redhat.com. 132 IN NS ns3.redhat.com.
redhat.com. 132 IN NS ns2.redhat.com.