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A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database. The most common types of records stored in the DNS database are for start of authority ( SOA ), IP addresses ( A and AAAA ), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS ...
The addition of IPv6 addresses for the root name servers requires more than 512 bytes, which is facilitated by the EDNS0 extension to the DNS standard. [ 8 ] This does not mean that there are only 13 physical servers; each operator uses redundant computer equipment to provide reliable service even if failure of hardware or software occurs.
A DNS name server is a server that stores the DNS records, such as address (A, AAAA) records, name server (NS) records, and mail exchanger (MX) records for a domain name (see also List of DNS record types) and responds with answers to queries against its database.
This article is for beginners, who have recently get started with the computer and the Internet. If you already know what a DNS server is and how does it work, then please skip this guide because ...
Returns all records of all types known to the name server. If the name server does not have any information on the name, the request will be forwarded on. The records returned may not be complete. For example, if there is both an A and an MX for a name, but the name server has only the A record cached, only the A record will be returned.
Google Public DNS is a Domain Name System (DNS) service offered to Internet users worldwide by Google. It functions as a recursive name server . Google Public DNS was announced on December 3, 2009, [ 1 ] in an effort described as "making the web faster and more secure."
OpenDNS offers DNS resolution as an alternative to using Internet service providers' DNS servers or locally installed DNS servers. OpenDNS has adopted and supports the DNSCurve secure protocol. [2] OpenDNS provides the following recursive nameserver addresses [3] for public use, mapped to the nearest operational server location by anycast routing.
The 1.1.1.1 DNS service operates recursive name servers for public use at the twelve IP addresses listed below. [11] These addresses are mapped to the nearest operational server by anycast routing. [12] The DNS service is also available for Tor clients. [13] Users can set up the service by manually changing their DNS resolvers to the IP ...