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Primary DNS vs Secondary DNS
WHAT IS IT ?
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The web address you type in your browser's navigation bar, before you can view a Web page, your system must contact a DNS or Domain Name System.
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A server that will match the Web address you typed to four sets of numbers that make up the site's Internet Protocol address.
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The browser will use these numbers to locate the site's Web server.
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Your Internet Service Provider will use a primary DNS server and a secondary DNS server as a backup.
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They are DNS server computers where the domain name is saved.
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The information is identical on both DNS servers. The values for these two DNS's are configured by the Internet Service Provider (ISP).
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The secondary DNS acts as backup for the Primary DNS in case the Primary DNS does not work.
123.176.37.37
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192.168.1.7
googe.com
139.130.4.5
googe.com
183.82.97.61
192.168.1.1
183.82.96.1
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ISP
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Secondary DNS Server
Internet
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Secondary DNS Server
123.176.37.38
Every computer connected to the internet is configured with a list of servers which is automatically filled in by your ISP.
How to find Primary and Secondary DNS server:
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You can find both DNS server addresses on your PC using the command.
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Press "Win-R," > type "cmd" > Enter.
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Type "ipconfig /all " at the command prompt > Enter.
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Look for the field labeled "DNS Servers." The first address is the primary DNS server, and the next address is the secondary DNS server.
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Primary DNS server
Secondary DNS server
Type ipconfig /all in cmd
Difference between a primary DNS server and Secondary DNS server:
Primary DNS Server
Secondary DNS Server
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It is authoritative server for the zone.
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It is the backup DNS Server.
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It is the read-only copy of the DNA record.
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It is the read/write copy of the DNS database.
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Sends information to the secondary server.
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Receives data from the primary server automatically.
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There can be up to 225 secondary DNS server.
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One DNS server can have only one primary DNS server.
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Responsible for creating, updating and maintaining zone file.
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Neither creates and update zone file.
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Anyone can change the DNS server of a connected computer into router IP in control panel.
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But internally it searches the store IP address in the chase.
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If the router does not find it forwards the domain name into primary DNS server provided by Internet Service Provider (ISP).
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