\u5bf9\u4e8e\u670d\u52a1\u56fd\u9645\u7528\u6237\u7684\u7f8e\u56fd\u670d\u52a1\u5668\uff0c\u4ee5\u4e0b\u4e24\u5927\u56e0\u7d20\u6613\u5f15\u53d1\u8d85\u65f6\uff1a<\/p>\n

\n
• \u57df\u540d\u6388\u6743\u5ef6\u8fdf\uff1a\u82e5\u4f60\u8fd1\u671f\u4e3a\u975e\u7f8e\u56fd\u6ce8\u518c\u7684\u57df\u540d\u66f4\u65b0\u4e86\u57df\u540d\u670d\u52a1\u5668\uff0c\u5176\u5728\u5317\u7f8e\u5730\u533a\u89e3\u6790\u5668\u7684\u751f\u6548\u65f6\u95f4\u53ef\u80fd\u957f\u8fbe24-48\u5c0f\u65f6\uff08\u957f\u4e8e\u672c\u571f\u89e3\u6790\u4f20\u64ad\u65f6\u95f4\uff09\u3002<\/li>\n
• \u8de8\u5927\u897f\u6d0b\/\u592a\u5e73\u6d0b\u94fe\u8def\u62e5\u585e\uff1a\u8fde\u63a5\u7f8e\u56fd\u4e0e\u4e9a\u6b27\u5730\u533a\u7684\u4e92\u8054\u7f51\u4ea4\u6362\u4e2d\u5fc3\uff08IXP\uff09\u5728\u9ad8\u5cf0\u65f6\u6bb5\u53ef\u80fd\u51fa\u73b0\u6570\u636e\u5305\u4e22\u5931\uff0c\u5e72\u6270DNS\u67e5\u8be2\u4f20\u8f93\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

  6\u4e2a\u6280\u672f\u5316\u6b65\u9aa4\uff1a\u4fee\u590d\u7f8e\u56fd\u670d\u52a1\u5668DNS\u8d85\u65f6\u95ee\u9898<\/strong><\/h2>\n

  \u4ee5\u4e0b\u6b65\u9aa4\u6ce8\u91cd\u6280\u672f\u7cbe\u51c6\u6027\u2014\u2014\u6bcf\u4e2a\u6b65\u9aa4\u5747\u5305\u542b\u6267\u884c\u547d\u4ee4\u548c\u9a8c\u8bc1\u65b9\u6cd5\uff0c\u786e\u4fdd\u4fee\u590d\u6548\u679c\u3002\u53ef\u6839\u636e\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\uff08\u5171\u4eab\u3001\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\u3001\u72ec\u7acb\u670d\u52a1\u5668\uff09\u6216\u6258\u7ba1\u73af\u5883\u7075\u6d3b\u9002\u914d\uff1a<\/p>\n

  \n
  1. \n \u4f7f\u7528\u5e95\u5c42\u5de5\u5177\u9a8c\u8bc1DNS\u89e3\u6790<\/strong><\/p>\n

     \u65e0\u9700\u4f9d\u8d56\u6d4f\u89c8\u5668\u68c0\u6d4b\uff0c\u76f4\u63a5\u4f7f\u7528nslookup<\/code>\u6216dig<\/code>\u5de5\u5177\u6d4b\u8bd5\u57df\u540d\u662f\u5426\u89e3\u6790\u81f3\u6b63\u786e\u7684\u7f8e\u56fd\u670d\u52a1\u5668IP\u3002\u5206\u522b\u5728\u7f8e\u672c\u571f\u673a\u5668\uff08\u6a21\u62df\u672c\u5730\u6d41\u91cf\uff09\u548c\u56fd\u9645\u673a\u5668\uff08\u6d4b\u8bd5\u8de8\u5883\u6027\u80fd\uff09\u4e0a\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n

     \n
     • Linux\/macOS\uff1adig yourdomain.com @8.8.8.8<\/code>\uff08\u4f7f\u7528\u516c\u5171\u89e3\u6790\u5668\u7ed5\u8fc7\u672c\u5730\u7f13\u5b58\uff09\u2014\u2014\u5728\u201cANSWER SECTION\u201d\u4e2d\u786e\u8ba4\u662f\u5426\u663e\u793a\u7f8e\u56fd\u670d\u52a1\u5668IP\u3002<\/li>\n
     • Windows\uff1anslookup yourdomain.com 8.8.8.8<\/code>\u2014\u2014\u9a8c\u8bc1\u201c\u975e\u6743\u5a01\u5e94\u7b54\u201d\u4e2d\u7684IP\u662f\u5426\u4e0e\u670d\u52a1\u5668IP\u4e00\u81f4\u3002<\/li>\n<\/ul>\n

       \u82e5IP\u5730\u5740\u4e0d\u6b63\u786e\uff0c\u8bf4\u660e\u95ee\u9898\u51fa\u5728\u8bb0\u5f55\u914d\u7f6e\u800c\u975e\u8d85\u65f6\u2014\u2014\u9700\u4f18\u5148\u66f4\u65b0A\/AAAA\u8bb0\u5f55\u3002\n <\/p>\n<\/li>\n

     • \n \u66f4\u6362\u9002\u914d\u5317\u7f8e\u7684DNS\u670d\u52a1\u5546<\/strong><\/p>\n

       \u9009\u62e9\u5728\u7f8e\u62e5\u6709\u5197\u4f59PoP\u8282\u70b9\u7684DNS\u670d\u52a1\u5546\uff0c\u4ee5\u6700\u5927\u9650\u5ea6\u964d\u4f4e\u5ef6\u8fdf\u3002\u5c06\u57df\u540d\u7684\u57df\u540d\u670d\u52a1\u5668\u914d\u7f6e\u4e3a\u65b0\u670d\u52a1\u5546\u5730\u5740\uff0c\u968f\u540e\u901a\u8fc7dig +trace yourdomain.com<\/code>\u9a8c\u8bc1\u89e3\u6790\u4f20\u64ad\u2014\u2014\u8be5\u547d\u4ee4\u53ef\u663e\u793aDNS\u67e5\u8be2\u8def\u5f84\uff0c\u786e\u8ba4\u8bf7\u6c42\u662f\u5426\u901a\u8fc7\u7f8e\u56fd\u8282\u70b9\u8def\u7531\u3002\u907f\u514d\u4f7f\u7528\u65e0\u7f8e\u56fd\u8282\u70b9\u7684\u670d\u52a1\u5546\uff0c\u6b64\u7c7b\u670d\u52a1\u4f1a\u589e\u52a0100-300\u6beb\u79d2\u5ef6\u8fdf\uff08\u8db3\u4ee5\u89e6\u53d1\u8d85\u65f6\uff09\u3002<\/p>\n<\/li>\n

     • \n \u5237\u65b0\u670d\u52a1\u5668\u7aefDNS\u7f13\u5b58<\/strong><\/p>\n

       \u7f8e\u56fd\u670d\u52a1\u5668\u4e0a\u7684\u8fc7\u671f\u7f13\u5b58\u53ef\u80fd\u5bfc\u81f4\u5176\u5ffd\u7565\u65b0\u8bb0\u5f55\u3002\u901a\u8fc7\u4ee5\u4e0b\u73af\u5883\u4e13\u5c5e\u547d\u4ee4\u6e05\u9664\u7f13\u5b58\uff1a<\/p>\n

       \n
       • Linux\uff08nscd\uff09\uff1asudo systemctl restart nscd<\/code>\u2014\u2014\u901a\u8fc7sudo nscd -g<\/code>\u9a8c\u8bc1\uff08\u5728DNS\u90e8\u5206\u67e5\u770b\u201ccache is empty\u201d\u6807\u8bc6\uff09\u3002<\/li>\n
       • Linux\uff08systemd-resolved\uff09\uff1asudo systemctl restart systemd-resolved<\/code>\u2014\u2014\u901a\u8fc7sudo resolvectl status<\/code>\u67e5\u770b\u72b6\u6001\u3002<\/li>\n
       • Windows Server\uff1aipconfig \/flushdns<\/code>\u2014\u2014\u901a\u8fc7ipconfig \/displaydns<\/code>\u786e\u8ba4\uff08\u82e5\u663e\u793a\u201c\u672a\u914d\u7f6eDNS\u670d\u52a1\u5668\u201d\u5219\u8868\u793a\u7f13\u5b58\u5df2\u6e05\u9664\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n
       • \n \u4f7f\u7528Traceroute\/MTR\u6d4b\u8bd5\u8282\u70b9\u8fde\u901a\u6027<\/strong><\/p>\n

         \u8d85\u65f6\u95ee\u9898\u5e38\u6e90\u4e8e\u7f8e\u56fd\u670d\u52a1\u5668\u4e0e\u89e3\u6790\u5668\u4e4b\u95f4\u7684\u8def\u5f84\u4e2d\u65ad\u3002\u4f7f\u7528traceroute<\/code>\uff08Linux\/macOS\uff09\u6216tracert<\/code>\uff08Windows\uff09\u6620\u5c04\u8def\u7531\u8def\u5f84\uff1a<\/p>\n

         \n
         • Linux\/macOS\uff1amtr --report your-dns-provider-ip<\/code>\uff08MTR\u7ed3\u5408\u4e86ping\u548ctraceroute\u529f\u80fd\uff0c\u53ef\u83b7\u53d6\u6570\u636e\u5305\u4e22\u5931\u6570\u636e\uff09\u2014\u2014\u5173\u6ce8\u8fde\u63a5\u7f8e\u56fd\u672c\u571f\u89e3\u6790\u5668\u7684\u8def\u7531\u4e2d\u662f\u5426\u5b58\u572810%\u4ee5\u4e0a\u7684\u4e22\u5305\u7387\u3002<\/li>\n
         • Windows\uff1atracert your-dns-provider-ip<\/code>\u2014\u2014\u68c0\u67e5\u7f8e\u56fd\u5883\u5185\u8def\u7531\u8282\u70b9\u662f\u5426\u51fa\u73b0\u201c\u8bf7\u6c42\u8d85\u65f6\u201d\u3002<\/li>\n<\/ul>\n

           \u82e5\u5b58\u5728\u4e22\u5305\u60c5\u51b5\uff0c\u8054\u7cfb\u670d\u52a1\u5546\u5207\u6362\u81f3\u5176\u4ed6\u7f8e\u56fd\u672c\u571f\u89e3\u6790\u5668IP\u3002\n <\/p>\n<\/li>\n

         • \n \u9488\u5bf9\u7f8e\u56fd\u6d41\u91cf\u4f18\u5316TTL\u503c<\/strong><\/p>\n

           TTL\uff08\u751f\u5b58\u65f6\u95f4\uff09\u51b3\u5b9a\u4e86\u89e3\u6790\u5668\u7f13\u5b58DNS\u8bb0\u5f55\u7684\u65f6\u957f\u3002\u5bf9\u4e8e\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\uff0c\u5728\u8fdb\u884c\u6d3b\u8dc3\u53d8\u66f4\u65f6\uff08\u4f8b\u5982\u4fee\u590d\u8d85\u65f6\u95ee\u9898\u540e\uff09\uff0c\u5c06TTL\u8bbe\u7f6e\u4e3a300\u79d2\uff085\u5206\u949f\uff09\u4ee5\u52a0\u901f\u89e3\u6790\u4f20\u64ad\uff1b\u670d\u52a1\u7a33\u5b9a\u540e\uff0c\u53ef\u8c03\u6574\u81f33600\u79d2\uff081\u5c0f\u65f6\uff09\u4ee5\u964d\u4f4e\u89e3\u6790\u5668\u8d1f\u8f7d\u3002\u907f\u514d\u5c06TTL\u8bbe\u7f6e\u4f4e\u4e8e300\u79d2\u2014\u2014\u8fd9\u53ef\u80fd\u89e6\u53d1\u90e8\u5206\u7f8e\u56fd\u672c\u571f\u89e3\u6790\u5668\u7684\u901f\u7387\u9650\u5236\u3002\u5728\u670d\u52a1\u5546\u63a7\u5236\u53f0\u7684\u201c\u8bb0\u5f55\u8bbe\u7f6e\u201d\u4e2d\u66f4\u65b0TTL\u503c\u3002<\/p>\n<\/li>\n

         • \n \u5c06\u7f8e\u56fd\u670d\u52a1\u5668\u7ed1\u5b9a\u9759\u6001IP\u5e76\u9a8c\u8bc1\u9632\u706b\u5899\u89c4\u5219<\/strong><\/p>\n

           \u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u82e5\u4f7f\u7528\u52a8\u6001IP\uff0cIP\u53d8\u66f4\u540e\u4f1a\u5bfc\u81f4\u8bb0\u5f55\u5931\u6548\u3002\u901a\u8fc7\u670d\u52a1\u5546\u7ba1\u7406\u9762\u677f\u786e\u8ba4\u670d\u52a1\u5668\u5df2\u914d\u7f6e\u9759\u6001IP\u3002\u968f\u540e\u9a8c\u8bc1\u9632\u706b\u5899\u89c4\u5219\u662f\u5426\u5141\u8bb8DNS\u6d41\u91cf\uff1a<\/p>\n

           \n
           • Linux\uff08ufw\uff09\uff1asudo ufw allow out 53\/udp<\/code> \u548c sudo ufw allow in 53\/udp<\/code>\u2014\u2014\u901a\u8fc7sudo ufw status<\/code>\u67e5\u770b\u914d\u7f6e\u3002<\/li>\n
           • Linux\uff08iptables\uff09\uff1asudo iptables -A OUTPUT -p udp --dport 53 -j ACCEPT<\/code>\u2014\u2014\u901a\u8fc7sudo iptables-save<\/code>\u4fdd\u5b58\u914d\u7f6e\u3002<\/li>\n
           • Windows\uff1a\u6253\u5f00\u201cWindows Defender\u9632\u706b\u5899\u201d\u2192\u201c\u9ad8\u7ea7\u8bbe\u7f6e\u201d\u2192\u5728\u5165\u7ad9\u548c\u51fa\u7ad9\u89c4\u5219\u4e2d\u5747\u5141\u8bb8UDP\u7aef\u53e353\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

             \u4e3b\u52a8\u9632\u5fa1\uff1a\u957f\u671f\u907f\u514d\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528DNS\u8d85\u65f6<\/strong><\/h2>\n

             \u6280\u672f\u56e2\u961f\u65e0\u9700\u7b49\u5230\u8d85\u65f6\u95ee\u9898\u53d1\u751f\u624d\u91c7\u53d6\u884c\u52a8\u2014\u2014\u5b9e\u65bd\u4ee5\u4e0b\u4e3b\u52a8\u63aa\u65bd\uff0c\u53ef\u786e\u4fdd\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\/\u6258\u7ba1\u7684DNS\u670d\u52a1\u6301\u7eed\u7a33\u5b9a\uff1a<\/p>\n

             \n
             • \n \u6bcf\u5468\u6267\u884cDNS\u5ba1\u8ba1<\/strong><\/p>\n

               \u901a\u8fc7Linux\u7684\u5b9a\u65f6\u4efb\u52a1\uff08cron jobs\uff09\u6216Windows\u7684\u4efb\u52a1\u8ba1\u5212\u7a0b\u5e8f\uff0c\u81ea\u52a8\u8fd0\u884cdig<\/code>\/nslookup<\/code>\u547d\u4ee4\u68c0\u6d4b\u57df\u540d\u72b6\u6001\u3002\u4f8b\u5982\uff0c\u5728Linux\u4e2d\u914d\u7f6e\u5b9a\u65f6\u4efb\u52a1\uff0c\u6bcf\u5929\u51cc\u66682\u70b9\uff08\u7f8e\u56fd\u65f6\u95f4\uff09\u6267\u884cdig yourdomain.com >> \/var\/log\/dns-check.log<\/code>\u3002\u6bcf\u5468\u67e5\u770b\u65e5\u5fd7\uff0c\u5728\u89e3\u6790\u5ef6\u8fdf\u6f14\u53d8\u4e3a\u8d85\u65f6\u524d\u53d1\u73b0\u65e9\u671f\u8ff9\u8c61\u3002<\/p>\n<\/li>\n

             • \n \u914d\u7f6e\u591a\u89e3\u6790\u5668\u5907\u4efd<\/strong><\/p>\n

               \u4e0d\u8981\u4f9d\u8d56\u5355\u4e00\u89e3\u6790\u5668\u4e3a\u7f8e\u56fd\u670d\u52a1\u5668\u63d0\u4f9b\u670d\u52a1\u3002\u5728\u670d\u52a1\u5668\u7f51\u7edc\u8bbe\u7f6e\u4e2d\u914d\u7f6e2-3\u4e2a\u5197\u4f59\u89e3\u6790\u5668\uff08\u5747\u9700\u5177\u5907\u7f8e\u56fdPoP\u8282\u70b9\uff09\u3002\u5bf9\u4e8eLinux\u7cfb\u7edf\uff0c\u7f16\u8f91\/etc\/resolv.conf<\/code>\u6587\u4ef6\uff0c\u6dfb\u52a0\u591a\u6761nameserver<\/code>\u914d\u7f6e\uff1b\u5bf9\u4e8eWindows\u7cfb\u7edf\uff0c\u901a\u8fc7\u201c\u7f51\u7edc\u548c\u5171\u4eab\u4e2d\u5fc3\u201d\u2192\u201cTCP\/IP\u5c5e\u6027\u201d\u6dfb\u52a0\u5907\u7528\u89e3\u6790\u5668\u3002\u6b64\u4e3e\u53ef\u907f\u514d\u5355\u4e00\u89e3\u6790\u5668\u6545\u969c\u5bfc\u81f4\u7684\u670d\u52a1\u4e2d\u65ad\u3002<\/p>\n<\/li>\n

             • \n \u6839\u636e\u7f8e\u56fd\u670d\u52a1\u5668\u4f7f\u7528\u573a\u666f\u9009\u62e9DNS\u7c7b\u578b<\/strong><\/p>\n

               \u4f9d\u636e\u7f8e\u56fd\u670d\u52a1\u5668\u7684\u670d\u52a1\u5bf9\u8c61\u9009\u62e9\u89e3\u6790\u7b56\u7565\uff1a<\/p>\n

               \n
               • \u4ec5\u670d\u52a1\u5317\u7f8e\u7528\u6237\uff1a\u542f\u7528\u201c\u533a\u57dfDNS\u8def\u7531\u201d\uff08\u82e5\u670d\u52a1\u5546\u652f\u6301\uff09\uff0c\u5f3a\u5236\u67e5\u8be2\u8bf7\u6c42\u901a\u8fc7\u7f8e\u56fd\u672c\u571f\u8282\u70b9\u89e3\u6790\u3002<\/li>\n
               • \u670d\u52a1\u5168\u7403\u7528\u6237\uff1a\u4f7f\u7528\u201c\u4efb\u64adDNS\u201d\u6280\u672f\uff0c\u5c06\u67e5\u8be2\u8bf7\u6c42\u8def\u7531\u81f3\u6700\u8fd1\u7684\u7f8e\u56fdPoP\u8282\u70b9\uff08\u964d\u4f4e\u8de8\u5883\u6d41\u91cf\u5ef6\u8fdf\uff09\u3002<\/li>\n
               • \u6258\u7ba1\u670d\u52a1\u5668\uff1a\u5728\u6258\u7ba1\u7f51\u7edc\u4e2d\u90e8\u7f72\u672c\u5730DNS\u670d\u52a1\u5668\uff08\u5982BIND\u3001Unbound\uff09\uff0c\u5b8c\u5168\u7ed5\u8fc7\u5916\u90e8\u89e3\u6790\u5668\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                 \u5e38\u89c1\u95ee\u9898\uff1a\u6280\u672f\u56e2\u961f\u5173\u4e8e\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528DNS\u8d85\u65f6\u7684\u6838\u5fc3\u7591\u95ee<\/strong><\/h2>\n

                 \n
                 • \n \u7f8e\u56fd\u670d\u52a1\u5668\u5e94\u9009\u62e9\u672c\u571fDNS\u670d\u52a1\u5546\u8fd8\u662f\u56fd\u9645\u670d\u52a1\u5546\uff1f<\/strong><\/p>\n

                   \u4f18\u5148\u9009\u62e9\u7f8e\u56fd\u672c\u571f\u670d\u52a1\u5546\u6216\u5728\u7f8e\u62e5\u6709\u5b8c\u5584PoP\u8282\u70b9\u7684\u670d\u52a1\u5546\u3002\u56fd\u9645\u670d\u52a1\u5546\u53ef\u80fd\u589e\u52a0\u4e0d\u5fc5\u8981\u7684\u5ef6\u8fdf\u2014\u2014\u5373\u4f7f\u4ec5100\u6beb\u79d2\u7684\u5ef6\u8fdf\uff0c\u4e5f\u53ef\u80fd\u5bfc\u81f4\u67e5\u8be2\u8bf7\u6c42\u8d85\u51fa\u8d85\u65f6\u9608\u503c\u3002\u901a\u8fc7ping<\/code>\u547d\u4ee4\u6d4b\u8bd5\u670d\u52a1\u5546\u5ef6\u8fdf\uff1a\u7f8e\u672c\u571f\u6d4b\u8bd5\u70b9\u7684\u5ef6\u8fdf\u5e94\u63a7\u5236\u572850\u6beb\u79d2\u4ee5\u5185\u3002<\/p>\n<\/li>\n

                 • \n DNS\u8d85\u65f6\u4f1a\u5f71\u54cd\u7f8e\u56fd\u670d\u52a1\u5668\u7684SEO\u8868\u73b0\u5417\uff1f<\/strong><\/p>\n

                   \u4f1a\u3002\u8c37\u6b4c\u673a\u5668\u4eba\u7b49\u641c\u7d22\u5f15\u64ce\u722c\u866b\u9700\u901a\u8fc7DNS\u8bbf\u95ee\u670d\u52a1\u5668\u2014\u2014\u9891\u7e41\u8d85\u65f6\u4f1a\u5bfc\u81f4\u722c\u866b\u65e0\u6cd5\u7d22\u5f15\u65b0\u5185\u5bb9\uff0c\u8fdb\u800c\u9020\u6210\u6392\u540d\u4e0b\u964d\u3002\u53ef\u901a\u8fc7\u8c37\u6b4c\u641c\u7d22\u63a7\u5236\u53f0\u7684\u201c\u6838\u5fc3\u7f51\u7edc\u751f\u547d\u529b\u201d\u62a5\u544a\u76d1\u63a7DNS\u76f8\u5173\u95ee\u9898\uff08\u6807\u8bb0\u4e3a\u201cDNS\u89e3\u6790\u65f6\u95f4\u201d\uff09\u3002<\/p>\n<\/li>\n

                 • \n \u66f4\u6362DNS\u670d\u52a1\u5546\u65f6\uff0c\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u4f1a\u51fa\u73b0\u505c\u673a\u65f6\u95f4\u5417\uff1f<\/strong><\/p>\n

                   \u82e5\u63d0\u524d\u89c4\u5212\u5219\u4e0d\u4f1a\u3002\u5728\u66f4\u6362\u524d24\u5c0f\u65f6\u5c06TTL\u503c\u964d\u81f3300\u79d2\u2014\u2014\u786e\u4fdd\u89e3\u6790\u5668\u7f13\u5b58\u7684\u8bb0\u5f55\u66f4\u5feb\u8fc7\u671f\u3002\u9009\u62e9\u7f8e\u56fd\u975e\u9ad8\u5cf0\u65f6\u6bb5\u66f4\u6362\u57df\u540d\u670d\u52a1\u5668\uff0c\u4ee5\u6700\u5927\u9650\u5ea6\u51cf\u5c11\u5f71\u54cd\u3002\u901a\u8fc7dig +short yourdomain.com<\/code>\u5728\u7f8e\u5404\u5730\u533a\u6d4b\u8bd5\u89e3\u6790\u7ed3\u679c\uff0c\u786e\u8ba4\u8bb0\u5f55\u5df2\u6210\u529f\u4f20\u64ad\u3002<\/p>\n<\/li>\n<\/ul>\n

                   \u6838\u5fc3\u603b\u7ed3\uff1a\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528DNS\u8d85\u65f6\u4fee\u590d = \u7cbe\u51c6\u5b9a\u4f4d + \u4e3b\u52a8\u9632\u5fa1<\/strong><\/h2>\n

                   \u5bf9\u4e8e\u7f8e\u56fd\u670d\u52a1\u5668\u79df\u7528\u548c\u6258\u7ba1\u573a\u666f\uff0cDNS\u8d85\u65f6\u5e76\u975e\u901a\u7528\u578b\u95ee\u9898\u2014\u2014\u9700\u8981\u9488\u5bf9\u5317\u7f8e\u7f51\u7edc\u5730\u7406\u7279\u5f81\u548c\u670d\u52a1\u5668\u73af\u5883\u5b9a\u5236\u89e3\u51b3\u65b9\u6848\u3002\u5173\u952e\u5728\u4e8e\uff1a\u9996\u5148\u901a\u8fc7dig<\/code>\u3001mtr<\/code>\u7b49\u5e95\u5c42\u5de5\u5177\u5b9a\u4f4d\u6839\u672c\u539f\u56e0\uff08\u670d\u52a1\u5546\u4e0d\u5339\u914d\u3001\u670d\u52a1\u5668\u914d\u7f6e\u9519\u8bef\u6216\u7f51\u7edc\u62e5\u585e\uff09\uff0c\u7136\u540e\u5b9e\u65bd\u9488\u5bf9\u6027\u4fee\u590d\uff08\u5237\u65b0\u7f13\u5b58\u3001\u4f18\u5316TTL\u3001\u6dfb\u52a0\u5197\u4f59\u89e3\u6790\u5668\uff09\u3002\u957f\u671f\u6765\u770b\uff0c\u4e3b\u52a8\u5ba1\u8ba1\u548c\u533a\u57dfDNS\u4f18\u5316\u80fd\u6709\u6548\u9632\u8303\u8d85\u65f6\u95ee\u9898\u3002\u901a\u8fc7\u805a\u7126\u8fd9\u4e9b\u9488\u5bf9\u7f8e\u56fd\u670d\u52a1\u5668\u7684\u6280\u672f\u7b56\u7565\uff0c\u53ef\u786e\u4fdd\u670d\u52a1\u5668\u79df\u7528\/\u6258\u7ba1\u670d\u52a1\u5bf9\u5168\u7403\u7528\u6237\uff08\u65e0\u8bba\u662f\u7ebd\u7ea6\u8fd8\u662f\u4e1c\u4eac\uff09\u4fdd\u6301\u7a33\u5b9a\u8bbf\u95ee\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e0d\u4ec5\u80fd\u89e3\u51b3\u5373\u65f6\u6545\u969c\uff0c\u8fd8\u80fd\u63d0\u5347\u670d\u52a1\u5668\u53ef\u9760\u6027\uff0c\u5b8c\u7f8e\u5951\u5408\u7f8e\u56fd\u672c\u571f\u57fa\u7840\u8bbe\u65bd\u7684DNS\u8d85\u65f6\u4fee\u590d<\/strong>\u6838\u5fc3\u76ee\u6807\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                   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@8.8.8.8\uff08\u4f7f\u7528\u516c\u5171\u89e3\u6790\u5668\u7ed5\u8fc7\u672c\u5730\u7f13\u5b58\uff09\u2014\u2014\u5728\u201cANSWER SECTION\u201d\u4e2d\u786e\u8ba4\u662f\u5426\u663e\u793a\u7f8e\u56fd\u670d\u52a1\u5668IP\u3002 Windows\uff1anslookup yourdomain.com 8.8.8.8\u2014\u2014\u9a8c\u8bc1\u201c\u975e\u6743\u5a01\u5e94\u7b54\u201d\u4e2d\u7684IP\u662f\u5426\u4e0e\u670d\u52a1\u5668IP\u4e00\u81f4\u3002 \u82e5IP\u5730\u5740\u4e0d\u6b63\u786e\uff0c\u8bf4\u660e\u95ee\u9898\u51fa\u5728\u8bb0\u5f55\u914d\u7f6e\u800c\u975e\u8d85\u65f6\u2014\u2014\u9700\u4f18\u5148\u66f4\u65b0A\/AAAA\u8bb0\u5f55\u3002 \u66f4\u6362\u9002\u914d\u5317\u7f8e\u7684DNS\u670d\u52a1\u5546 \u9009\u62e9\u5728\u7f8e\u62e5\u6709\u5197\u4f59PoP\u8282\u70b9\u7684DNS\u670d\u52a1\u5546\uff0c\u4ee5\u6700\u5927\u9650\u5ea6\u964d\u4f4e\u5ef6\u8fdf\u3002\u5c06\u57df\u540d\u7684\u57df\u540d\u670d\u52a1\u5668\u914d\u7f6e\u4e3a\u65b0\u670d\u52a1\u5546\u5730\u5740\uff0c\u968f\u540e\u901a\u8fc7dig +trace yourdomain.com\u9a8c\u8bc1\u89e3\u6790\u4f20\u64ad\u2014\u2014\u8be5\u547d\u4ee4\u53ef\u663e\u793aDNS\u67e5\u8be2\u8def\u5f84\uff0c\u786e\u8ba4\u8bf7\u6c42\u662f\u5426\u901a\u8fc7\u7f8e\u56fd\u8282\u70b9\u8def\u7531\u3002\u907f\u514d\u4f7f\u7528\u65e0\u7f8e\u56fd\u8282\u70b9\u7684\u670d\u52a1\u5546\uff0c\u6b64\u7c7b\u670d\u52a1\u4f1a\u589e\u52a0100-300\u6beb\u79d2\u5ef6\u8fdf\uff08\u8db3\u4ee5\u89e6\u53d1\u8d85\u65f6\uff09\u3002 \u5237\u65b0\u670d\u52a1\u5668\u7aefDNS\u7f13\u5b58 \u7f8e\u56fd\u670d\u52a1\u5668\u4e0a\u7684\u8fc7\u671f\u7f13\u5b58\u53ef\u80fd\u5bfc\u81f4\u5176\u5ffd\u7565\u65b0\u8bb0\u5f55\u3002\u901a\u8fc7\u4ee5\u4e0b\u73af\u5883\u4e13\u5c5e\u547d\u4ee4\u6e05\u9664\u7f13\u5b58\uff1a Linux\uff08nscd\uff09\uff1asudo systemctl restart nscd\u2014\u2014\u901a\u8fc7sudo nscd -g\u9a8c\u8bc1\uff08\u5728DNS\u90e8\u5206\u67e5\u770b\u201ccache is empty\u201d\u6807\u8bc6\uff09\u3002 Linux\uff08systemd-resolved\uff09\uff1asudo systemctl restart systemd-resolved\u2014\u2014\u901a\u8fc7sudo resolvectl […]<\/p>\n

                   Read More…<\/a><\/p>\n","protected":false},"author":2,"featured_media":28785,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4816],"tags":[9446,9447,4853,1948],"class_list":["post-28788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-america-dedicated-server-sc","tag-dns-timeout-fix","tag-us-server-dns-issues","tag-us-hosting-sc","tag-dns-resolution-sc"],"acf":[],"yoast_head":"\n