Which DNS resource record is used to indicate the authoritative name server for a particular zone?
The authoritative DNS server is the final holder of the IP of the domain you are looking for. When you write a domain name in your browser, a DNS query is sent to your internet service provider (ISP). The ISP has a recursive server, which might have the needed information cached in its memory. But if the data is outdated, this recursive server need to find the IP elsewhere. It will try to find it in other recursive servers, but if it can’t, it needs to get the IP address from an authoritative DNS server. Show
Authoritative DNS serverSuch a server is the name server, which has the original zone records. It has been configured from the original source, and it returns answers to queries that have been predetermined by the administrator. The authoritative DNS servers can be where the website is hosted or where the DNS provider is. Premium DNS Service! ClouDNS offers Authoritative DNS Servers; you can check our Managed DNS page for more information. We provide cloud-based infrastructure with 34 points of presence and advanced features like E-mail Forwarding, Web Forwarding, Dynamic DNS, Domain parking, HTTP REST API, DNS statistics, zone sharing and more. You can even protect it from DDoS attacks. Authoritative DNS server vs. Recursive DNS serverBoth Authoritative DNS servers and Recursive DNS servers have crucial functions, and they depend on each other to fulfill their purposes. However, there are some fundamental differences between them. Authoritative DNS servers store the most recent and accurate information (DNS records) for a domain and are able to provide the final answers for users’ DNS queries (DNS lookups). On the other hand, Recursive DNS servers only keep a copy of the DNS information for a particular amount of time (TTL). Additionally, they often have to obtain the answer for a DNS query from another server. So let’s explain a little bit more about the differences between them! An authoritative DNS server is responsible for answering DNS queries for a particular set of DNS zones by providing information from its own data. It does not have the need to reference another source. Most commonly, it replies to the requests with one of the following types of answers:
The Recursive DNS server replies to DNS queries by asking other nameservers for the needed information (DNS records). In some cases, this server responds to DNS requests directly from its cache if the information is available there. In case it is not, the Recursive DNS server, also known as DNS resolver, is going to perform a search and ask the responsible authoritative servers until it finds the needed answer. Normally, Recursive DNS servers store in their cache memory information about previously queried domain names for further use. That really reduces the network traffic and improves the performance. Recursive DNS servers normally answer DNS queries in the following way:
Recursive DNS servers are most commonly used to reply to general DNS queries for users on a local network. How to get Authoritative DNS server for a domain?It is actually very easy to get the Authoritative DNS server for a domain name. Here we are going to show you how by using popular tools such as Dig, NSlookup, Host, and WHOIS.
We are going to use the Dig command and request the NS records, where NS stands for nameserver. Therefore, this DNS record is going to show us which are the authoritative DNS servers for the particular domain name or DNS zone. Type the following: $ dig +short NS exampledomain.com
NSlookup is another popular tool that can help you get the Authoritative DNS server for a domain name or a DNS zone. It works on Windows, Linux, and macOS. Once again, we are going to query the NS records. Simply type the following: $ nslookup -type=NS exampledomain.com
Host command is a beneficial tool that you can use on your Linux or macOS device. For our purpose, to get a list of the Authoritative DNS servers, we should request the NS record. Just write the following: $ host -t NS exampledomain.com
With the WHOIS command, you can get a list of the Authoritative DNS servers too. Write the following: $ whois exampledomain.com | grep -i “Name .*:” *Make sure to replace “exampledomain.com” with the one you want to check. ConclusionSo now you are familiar with what the Authoritative DNS server actually is and its crucial purpose! Its ability to provide authoritative answers to the DNS requests (DNS queries) is one of the key fundamentals of the entire DNS (Domain Name System) and the Internet as well! (Visited 32,183 times, 4 visits today) Hi, I’m Martin Pramatarov. I have two degrees, a Technician of Computer Networks and an MBA (Master of Business Administration). My passion is storytelling, but I can’t hide my nerdish side too. I never forgot my interest in the Hi-tech world. I have 10 years and thousands of articles written about DNS, cloud services, hosting, domain names, cryptocurrencies, hardware, software, AI, and everything in between. I have seen the Digital revolution, the Big migration to the cloud, and I am eager to write about all the exciting new tech trends in the following years. AI and Big Data are here already, and they will completely change the world! I hope you enjoy my articles and the excellent services of ClouDNS! Summary Article Name What is Authoritative DNS server? Description What is Authoritative Name Server? - The Authoritative DNS server is the final holder of the IP of the domain you are looking for. It is the name server which has the original zone records. Author Martin Pramatarov Enjoy this article? Don't forget to share. Tags: Authoritative DNS server, authoritative name server, DNS, IP address, Managed DNS, Recursive DNS server Last modified: June 2, 2022 Which resource record identifies that DNS as authoritative for the zone?Name Server (NS) Record : NS Records identify the DNS servers responsible (authoritative) for a Zone. A Zone should contain one NS Record for each of its own DNS servers (primary and secondary).
Which type of record in DNS server relates to an authoritative name server?4. NS record. A nameserver (NS) record specifies the authoritative DNS server for a domain. In other words, the NS record helps point to where internet applications like a web browser can find the IP address for a domain name.
What is authoritative name server DNS?An authoritative server is the authority for its zone. It queries and is queried by other name servers in the DNS. The data it receives in response from other name servers is cached. Authoritative servers are not authoritative for cached data.
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