How long does dns resolution take

Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 12 years, 10 months ago. Active 9 months ago. Viewed 17k times. Improve this question. Brian Fisher Brian Fisher 3 3 gold badges 10 10 silver badges 14 14 bronze badges.

This question is probably a better fit over at ServerFault. I know that wasn't up when this question was asked, but ou maybe get the answer you need there Add a comment. Active Oldest Votes. Improve this answer. Community Bot 1. David Spillett David Spillett Sorry, I probably shouldn't have use social acronyms in amongst technical ones! IIRC is "if I recall correctly". Brian Rasmussen Brian Rasmussen 2 2 silver badges 5 5 bronze badges.

Brian Clapper Brian Clapper 1 1 silver badge 4 4 bronze badges. Mike Mike 1 1 gold badge 6 6 silver badges 7 7 bronze badges. John Virgolino John Virgolino 8 8 silver badges 17 17 bronze badges. Internet Explorer offers a notable exception: recent versions cache DNS records for half an hour" A reboot or power cycle for routers will typically flush all local DNS caches, but obviously you can't expect every user out there to reboot every device after you change your A record.

Tezza P. Tezza 2 2 bronze badges. RainyRat RainyRat 3, 1 1 gold badge 22 22 silver badges 28 28 bronze badges. So, to emphasize Brian Clapper's advice: plan in advance. Brian Kelley K. Brian Kelley 8, 30 30 silver badges 33 33 bronze badges. The web browser will connect to the web server associated with the A records IP and display the website.

The entire lookup process, from start to finish, takes only milliseconds to complete. These servers will only respond to queries for locally stored DNS zone files. Say a server in our network has stored an A record for example. That server is the authoritative server for the example. A recursive name server is a DNS server that receives queries for informational purposes.

These types of servers do not store DNS records. When a query is received, it will search the cache memory for an address linked to the IP address. If the recursive name server has the information, then it will return a response to query sender. If it does not have the record, then the query will be sent to other recursive name servers. A zone forms one part of the DNS namespace delegated to administrators or specific entities. Each zone contains the resource records for all of its domain names.

A DNS zone file is a text file stored on a server. It contains all the records for every domain within that zone. The zone file can only list one record per line. DNS records are stored in authoritative servers. These records provide information about a domain, including its associated IP address for each domain. It is mandatory for all domains to have a specific set of default records.

Below are a list of the most common record types and frequently utilized DNS records. Below is a list of common DNS troubleshooting tips. Although DNS can be a complex issue, a better understanding of the process is always helpful.

These troubleshooting tips can prepare us to work with DNS. The following tools are quite useful when checking DNS propagation or records. Our Support Team is full of experienced Linux technicians and talented System administrators who have intimate knowledge of multiple web hosting technologies, especially those discussed in this article. Should you have any questions regarding this information, we are always available to answer any inquiries with issues related to this article, 24 hours a day, 7 days a week days a year.

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Search Search. What is DNS? Step 1: Requesting Website Information. DNS Servers. I used the dns prefetch script in the functions file of my WordPress site but it made no difference when re-testing with Pingdom, cleared all cache etc.

Why do the same domains keep reappearing like stats. Hey Ian! It actually appears from Pingdom that using DNS Prefetch code has slowed my site down not sped it up? Any ideas gratefully appreciated. The reason your site appeared to slow down is probably due to caching, not the prefetch code.

Check out our article on how to run a speed test. Thanks a lot for such informative post, leaned a lot my mental health site, speed is really low and I installed wp-deferred javascript plugin to speed up but it does not work. Thanks for the comment. Typically 24 hours is OK. Greetings, I tested the DNS Pre-fetching code, but it caused production of duplicate content on my site. What happened was that I made a change in the title of one of my blog posts.

When I published the new version, the system made it a new, separate post. I removed the DNS Pre-fetching code. Hey Zennie! This sounds like you might have implemented the code incorrectly. By submitting this form: You agree to the processing of the submitted personal data in accordance with Kinsta's Privacy Policy , including the transfer of data to the United States.

You also agree to receive information from Kinsta related to our services, events, and promotions. You may unsubscribe at any time by following the instructions in the communications received. Your current host could be costing you time and money — get them back with Kinsta. Learn more. Kinsta Blog. Brian Jackson , October 20, What is DNS Lookup? How DNS works.

DNS lookups in Pingdom. DNS cache in Pingdom. DNS lookups in GTmetrix. Long DNS lookup times webpagetest. Minimize DNS lookups in Pingdom. DNS provider speeds. Cloudflare TTL. Sign Up For the Newsletter. Find long DNS lookup times. Requests by domain.

Struggling with downtime and WordPress problems? Kinsta is the hosting solution designed to save you time! Check out our features. Google fonts DNS lookup. DNS prefetch browser support. Defer JavaScript in WordPress. Cloudflare Enterprise integration. Global audience reach with 28 data centers worldwide. Optimization with our built-in Application Performance Monitoring.

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