![]() ![]() More than half of IT managers say that their network teams are overwhelmed with DNS tickets and service requests. Consequently, about 16 percent of DNS queries on their networks fail, resulting in one of the other three common codes. In surveys of our own customers, DNS queries successfully resolve about 84 percent of the time on their enterprise networks, generating the NOERROR code. Many are rare and only appear in very unique circumstances. Officially, the full list of response codes numbers more than two dozen. Furthermore, we’ll touch on how BlueCat’s platform can help you better monitor and track your response codes and network activity. Then, we’ll examine each of the four most common codes in depth. In this post, we’ll touch briefly on the full compilation of response codes, also known as DNS return codes. Response data, particularly when there’s a problem, can you help you troubleshoot or identify a security breach faster. The four most common ones, returned with virtually all DNS queries, are NOERROR, NXDOMAIN, SERVFAIL, and REFUSED.īut do you really know what these common codes mean? Whether you successfully make it to the website or not, every response you get includes a code. ![]() And with the help of resolvers and DNS servers, that query gets a response.ĭNS translates human-readable domain names that we remember (like ) to the computer-friendly language of Internet Protocol (IP) addresses (like 104.239.197.100). To get there, your device sends out a DNS query. You want to visit a website, so you enter the URL in your browser. How well do you know your DNS response codes?ĭNS queries and responses are fundamental to how the internet works. ![]()
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