What is the Difference Between Authoritative and Recursive DNS

In a nutshell, Authoritative DNS servers store the “maps” of your domain names to IP addresses. ... Recursive DNS servers than ask the necessary Authoritative Name Server for the answer. Then the Recursive name server will give this answer to the person needing the information.

1. What is a recursive DNS?
2. What is an authoritative DNS?
3. What is the difference between authoritative and Nonauthoritative DNS?
4. How do I know if my DNS is authoritative?
5. Is Google DNS recursive?
6. How do I know if my DNS is recursive?
7. What are the types of DNS?
8. How many authoritative DNS servers are there?
9. What is the importance of using DNS?
10. Why would you need an authoritative answer?
11. What is authoritative and Nonauthoritative DNS server?
12. What is DNS zone example?

What is a recursive DNS?

Recursive DNS is the middle-man between the consumer and the Authoritative DNS servers that are hosting a company's domains and the IP addresses that are associated with a domain name. ... When a user types in a URL in their web browser, the URL is sent to the recursive DNS server first.

What is an authoritative DNS?

Authoritative DNS is the system that takes an address, like google.com, and provides an answer about the resources in that zone. The typical transaction looks something like this: User types an address into a web browser, or an application calls out to a given name of a resource on the Internet.

What is the difference between authoritative and Nonauthoritative DNS?

Authoritative DNS servers are responsible for the proper mapping of records and to respond to the recursive servers with important information for each website, such as; corresponding IP addresses and other necessary DNS records. Non-authoritative name servers do not contain the original zone files.

How do I know if my DNS is authoritative?

To find out who is responsible for DNS hosting of a domain, you need to find the authoritative DNS servers (or Name Servers) for that domain. A list of DNS servers authoritative for the domain is shown in the Name Server (NS) record. To find this record, you can use the NSLOOKUP tool.

Is Google DNS recursive?

Google Public DNS is a recursive DNS resolver, similar to other publicly available services. ... Google Public DNS is not, however, any of the following: A top-level domain (TLD) name service.

How do I know if my DNS is recursive?

2. Verify and Change your Recursive DNS Server

1. Open the “Command Prompt” and type “ipconfig /all”.
2. Find the IP address of the DNS and ping it.
3. If you were able to reach the DNS server through a ping, then that means that the server is alive. Try performing simple nslookup commands. ...
4. Test alternative DNS servers.

What are the types of DNS?

3 types of DNS servers—DNS Resolver, DNS Root Server and Authoritative Name Server. 10 types of common DNS records—including A, AAAA, CNAME, MX and NS.

How many authoritative DNS servers are there?

There are hundreds of root servers at over 130 locations all over the world. ICANN² is responsible for the servers for one of the 13 IP addresses and entrusts the operation of the rest to various other organizations. In total, there are 12 organizations held responsible, with VeriSign operating two of them³.

What is the importance of using DNS?

What is DNS? The Domain Name System (DNS) is used to convert IP addresses into readable domains such as bbc.co.uk. Without DNS everyone would have to remember random strings of number to access different websites, or at least Google's IP address.

Why would you need an authoritative answer?

An authoritative answer is when the DNS server hosting the primary copy of the DNS record responses to your lookup. See the example below on how to get an authoritative response. The reason why the primary authoritative server isn't involved in responding to all nslookup queries is to reduce server load.

What is authoritative and Nonauthoritative DNS server?

An authoritative name server is a name server that has the original source files of a domain zone files. The is where the domain administrator has configured the DNS records for a domain. Authoritative DNS server can be master DNS server or its slaves.

What is DNS zone example?

A DNS zone is a distinct part of the domain namespace which is delegated to a legal entity—a person, organization or company, who are responsible for maintaining the DNS zone. A DNS zone is also an administrative function, allowing for granular control of DNS components, such as authoritative name servers.