{"id":40002,"date":"2023-04-13T07:00:40","date_gmt":"2023-04-13T14:00:40","guid":{"rendered":"https:\/\/dhblog.dream.press\/blog\/?p=40002"},"modified":"2025-05-21T22:04:37","modified_gmt":"2025-05-22T05:04:37","slug":"dns-probe-finished-nxdomain","status":"publish","type":"post","link":"https:\/\/www-dev.dreamhost.com\/blog\/dns-probe-finished-nxdomain\/","title":{"rendered":"What Is the DNS_PROBE_FINISHED_NXDOMAIN Error? A Definitive Guide"},"content":{"rendered":"\n

No, DNS_PROBE_FINISHED_NXDOMAIN isn\u2019t a phrase uttered by extraterrestrial robots after they finish performing a surgical procedure on some poor bovine. It\u2019s actually an error code displayed by your browser when a website you are trying to access fails to load.<\/p>\n\n\n\n

But like all good error codes, the statement doesn\u2019t provide any context as to why the site isn\u2019t loading and what could be the possible culprit. At least, not right away.<\/p>\n\n\n\n

In this definitive guide to the DNS_PROBE_FINISHED_NXDOMAIN Error, we will walk you through the step-by-step process necessary to troubleshoot this error and fix it for good, either as an internet user or a website administrator. Read on to find out more.<\/p>\n\n\n\n

What is the Domain Name System (DNS)?<\/h2>\n\n\n\n

DNS, short for Domain Name System, is a bit like a telephone directory from the analog era.<\/p>\n\n\n\n\n\n

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What is DNS?<\/h3>\n

The Domain Name System (DNS) protocol keeps records of which domain names correspond to specific IP addresses. This system enables you to browse the web by typing in regular URLs instead of IP addresses.<\/p>\n \n Read More <\/a>\n\n<\/div>\n\n\n\n

But instead of phone numbers, DNS matches domain names (like “dreamhost.com”) to their IP addresses. It\u2019s the reason we don\u2019t have to memorize 12-digit serial numbers for every single website we visit, because it allows us to supplement it with their much cooler domain names!<\/p>\n\n\n\n

But sometimes, DNS servers can also act up and lead to error codes like DNS_PROBE_FINISHED_NXDOMAIN. It\u2019s definitely not a pleasant experience for the visitor trying to access your website, so it\u2019s important to know how to troubleshoot the issue should you encounter it.<\/p>\n\n\n\n

DNS Servers: How Do They Work?<\/h2>\n\n\n\n

DNS servers are the computer servers responsible for keeping the DNS systems up to date. They do this by matching a domain name to its IP Address.<\/p>\n\n\n\n

Whenever you type in a URL, your web browser sends a query to a DNS server which then pulls out the website via its IP Address. Of course, that\u2019s the simple explanation.<\/p>\n\n\n\n

In reality, DNS servers are hierarchy-based. When you type a web address into your browser, your computer sends a request to a DNS resolver, which is typically provided by your internet service provider (ISP). The resolver then queries the DNS root server, which is just the first step in the domain name lookup process.<\/p>\n\n\n\n

The DNS resolver then checks its cache to see if it already knows the IP address for that domain name. If it doesn’t, it sends a request to a DNS root server to determine which DNS servers are authoritative for the top-level domain.<\/p>\n\n\n\n

The DNS resolver then sends a request to one of the authoritative DNS servers for the top-level domain to get the IP address associated with that domain name.<\/p>\n\n\n\n

Once the DNS resolver gets the IP address, it caches it so that it can respond more quickly if it receives another request for that same domain name. It then returns the IP address to your device, which uses the IP address to establish a connection with the web server hosting the website you want to visit.<\/p>\n\n\n\n

This entire process usually takes just a few milliseconds! That\u2019s pretty amazing, considering how many requests are being sent and received behind the scenes.<\/p>\n\n\n\n

That being said, there are many steps to the process, which leaves plenty of room for error if one of these systems decides to act up. Next, let\u2019s try to understand what leads to an error code and how you can go about resolving it.<\/p>\n\n\n\n

The DNS_PROBE_FINISHED_NXDOMAIN Error, Explained<\/h2>\n\n\n\n
\"DNS_PROBE_FINISHED_NXDOMAIN<\/figure>\n\n\n\n

DNS_PROBE_FINISHED_NXDOMAIN is a common error that occurs when your device is unable to resolve the domain you are trying to access. NXDOMAIN stands for “Non-Existent Domain,” meaning the domain name you entered does not exist in the DNS.<\/p>\n\n\n\n

Essentially, when you enter a domain name in your web browser, your device sends a DNS query to a DNS resolver to find the IP address associated with that domain name. If the DNS resolver is unable to find the IP address for the domain name you entered in its cache, it sends a request to one of the authoritative DNS servers for the top-level domain to get the IP address.<\/p>\n\n\n\n

However, if the authoritative DNS server also fails to get the IP address corresponding to the domain name, it returns a “Non-Existent Domain” (NXDOMAIN) response to the DNS resolver, which then passes on the same error message to your browser.<\/p>\n\n\n\n

How can you tell if you\u2019ve encountered a DNS_PROBE_FINISHED_NXDOMAIN error when accessing a website? Based on your preferred web browser<\/a>, it may display as one of the following error messages:<\/p>\n\n\n\n