云服務器 ECS?Linux 系統可以使用通常自帶的?dig 命令來查詢域名解析情況。本文對此進行簡要說明。

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查詢域名 A 記錄

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命令格式：

dig <域名>

比如，查詢域名 www.aliyun.com 的解析情況：

$ dig www.aliyun.com; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> www.aliyun.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15919 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 2, ADDITIONAL: 4;; QUESTION SECTION: ;www.aliyun.com. IN A;; ANSWER SECTION: www.aliyun.com. 600 IN CNAME www-adns.aliyun.com. www-adns.aliyun.com. 300 IN CNAME www-adns.aliyun.com.gds.alibabadns.com. www-adns.aliyun.com.gds.alibabadns.com. 247 IN A 140.205.62.8;; AUTHORITY SECTION: gds.alibabadns.com. 82 IN NS gdsns2.alibabadns.com. gds.alibabadns.com. 82 IN NS gdsns1.alibabadns.com.;; ADDITIONAL SECTION: gdsns1.alibabadns.com. 877 IN A 140.205.122.66 gdsns1.alibabadns.com. 877 IN A 198.11.138.254 gdsns2.alibabadns.com. 877 IN A 140.205.67.254 gdsns2.alibabadns.com. 877 IN A 140.205.122.88;; Query time: 49 msec ;; SERVER: 10.242.197.247#53(10.242.197.247) ;; WHEN: Thu Jun 9 18:43:55 2016 ;; MSG SIZE rcvd: 226

查詢域名解析在指定 DNS 服務器解析是否生效

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命令格式：

dig <域名> @<DNS 服務器地址>

比如，查詢 www.aliyun.com 在 223.5.5.5 DNS 服務器是否解析生效：

$ dig www.aliyun.com @223.5.5.5; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> www.aliyun.com @223.5.5.5 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29651 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0;; QUESTION SECTION: ;www.aliyun.com. IN A;; ANSWER SECTION: www.aliyun.com. 95 IN CNAME www-adns.aliyun.com. # 查詢到的解析記錄 www-adns.aliyun.com. 95 IN CNAME www-adns.aliyun.com.gds.alibabadns.com. # 查詢到的解析記錄 www-adns.aliyun.com.gds.alibabadns.com. 95 IN A 140.205.63.8;; Query time: 0 msec ;; SERVER: 223.5.5.5#53(223.5.5.5) ;; WHEN: Thu Jun 9 18:44:42 2016 ;; MSG SIZE rcvd: 120

查詢域名的 CNAME 記錄

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命令格式：

dig CNAME <域名>

比如，查詢域名 www.aliyun.com?的 CNAME 記錄:

# dig CNAME www.aliyun.com; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> CNAME www.aliyun.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4690 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 7;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.aliyun.com. IN CNAME;; ANSWER SECTION: www.aliyun.com. 120 IN CNAME www-intl-adns.aliyun.com. # 查詢到的 CNAME 信息;; AUTHORITY SECTION: aliyun.com. 172800 IN NS ns5.aliyun.com. aliyun.com. 172800 IN NS ns4.aliyun.com. aliyun.com. 172800 IN NS ns3.aliyun.com.;; ADDITIONAL SECTION: ns3.aliyun.com. 432000 IN A 42.120.250.251 ns4.aliyun.com. 432000 IN A 110.75.20.27 ns4.aliyun.com. 432000 IN A 140.205.71.248 ns4.aliyun.com. 432000 IN A 42.156.241.248 ns5.aliyun.com. 432000 IN A 140.205.2.187 ns5.aliyun.com. 432000 IN A 198.11.138.248;; Query time: 10 msec ;; SERVER: 10.202.72.118#53(10.202.72.118) ;; WHEN: Fri Jul 08 11:46:33 CST 2016 ;; MSG SIZE rcvd: 221

查詢 IP 反解記錄

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命令格式：

dig -x <目標 IP 地址> $ dig -x 140.205.62.8; <<>> DiG 9.9.4-RedHat-9.9.4-14.el7 <<>> -x 140.205.62.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 38256 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;8.62.205.140.in-addr.arpa. IN PTR;; AUTHORITY SECTION: 140.in-addr.arpa. 945 IN SOA z.arin.net. dns-ops.arin.net. 2016031910 1800 900 691200 10800;; Query time: 3 msec ;; SERVER: 10.202.72.118#53(10.202.72.118) ;; WHEN: Fri Jul 08 11:51:32 CST 2016 ;; MSG SIZE rcvd: 108

查詢域名的 mx 解析記錄

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命令格式：

dig mx <目標域名>

?比如，查詢域名 aliyun.com?的 mx 解析記錄：

$ dig mx aliyun.com; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> mx aliyun.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33606 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 7;; QUESTION SECTION: ;aliyun.com. IN MX;; ANSWER SECTION: aliyun.com. 3600 IN MX 10 mx2.mail.aliyun.com.;; AUTHORITY SECTION: aliyun.com. 172800 IN NS ns4.aliyun.com. aliyun.com. 172800 IN NS ns3.aliyun.com. aliyun.com. 172800 IN NS ns5.aliyun.com.;; ADDITIONAL SECTION: mx2.mail.aliyun.com. 600 IN A 110.75.48.150 ns3.aliyun.com. 432000 IN A 42.120.250.251 ns4.aliyun.com. 432000 IN A 110.75.20.27 ns4.aliyun.com. 432000 IN A 140.205.71.248 ns4.aliyun.com. 432000 IN A 42.156.241.248 ns5.aliyun.com. 432000 IN A 198.11.138.248 ns5.aliyun.com. 432000 IN A 140.205.2.187;; Query time: 1 msec ;; SERVER: 10.242.197.247#53(10.242.197.247) ;; WHEN: Thu Jun 9 18:59:44 2016 ;; MSG SIZE rcvd: 219

轉載于:https://www.cnblogs.com/diyunpeng/p/7127829.html

總結

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