What Is Type A In DNS?

How are DNS queries resolved?

DNS queries resolve in a number of different ways.

The DNS server can use its own cache of resource record information to answer a query.

A DNS server can also query or contact other DNS servers on behalf of the requesting client to fully resolve the name, then send an answer back to the client..

What is a Cname record example?

A CNAME, or Canonical Name record, is a record that points to another domain address rather than an IP address. For example, say you have several subdomains, like www.mydomain.com, ftp.mydomain.com, mail.mydomain.com etc and you want these sub domains to point to your main domain name mydomain.com.

Can 2 domain names point to the same IP address?

It is not possible to provide two domain names for the same Server IP address and get two different SSL certificates (one for each domain name). Also note that the use of Host Headers (which is how you can use a single IP for more than one SSL enabled domain) is not recommended for E-Commerce sites.

How do DNS work?

DNS translates domain names to IP addresses so browsers can load Internet resources. Each device connected to the Internet has a unique IP address which other machines use to find the device. DNS servers eliminate the need for humans to memorize IP addresses such as 192.168.

What are the two types of DNS?

What are the different types of DNS server? All DNS servers fall into one of four categories: Recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers.

What is A and AAAA record?

An AAAA record maps a domain name to the IP address (Version 6) of the computer hosting the domain. An AAAA record is used to find the IP address of a computer connected to the internet from a name. … As with the A records, you can use multiple AAAA records for the same domain in order to provide redundancy.

What are NS records?

What is a DNS NS record? NS stands for ‘name server’ and this record indicates which DNS server is authoritative for that domain (which server contains the actual DNS records). A domain will often have multiple NS records which can indicate primary and backup name servers for that domain.

Is WWW an A record or Cname?

A Canonical Name or CNAME record is a type of DNS record that maps an alias name to a true or canonical domain name. CNAME records are typically used to map a subdomain such as www or mail to the domain hosting that subdomain’s content.

What are the DNS record types?

What are the most common types of DNS record?A record – The record that holds the IP address of a domain.CNAME record – Forwards one domain or subdomain to another domain, does NOT provide an IP address.MX record – Directs mail to an email server.TXT record – Lets an admin store text notes in the record.More items…

What DNS records do I need for website?

What DNS Records Do I Need to Add?You MUST have an A Record. … If you want to use www. … If you have any subdomains such as blog.mydomain.com then you will need to set up A Records for these also and point them to the IP address of where they are held.If you are using email you will need an MX Record.

How do DNS zones work?

A DNS zone is an administrative space which allows for more granular control of DNS components, such as authoritative nameservers. The domain name space is a hierarchical tree, with the DNS root domain at the top. … In fact, a DNS zone can contain multiple subdomains and multiple zones can exist on the same server.

What is primary DNS zone?

Primary DNS Zone: A Primary DNS zone is the original Read-Write Authoritative DNS zone of portion of a DNS Namespace. When a DNS Server hosts a primary zone, that DNS Server is considered as the Authoritative DNS Server and it is the primary source for information of that zone.

What is the difference between an A and Cname record on a DNS?

What is the Difference Between a CNAME Record, A Record and Redirect? An A record is the actual record. The name is resolved to the corresponding IP address. CNAME records (short for Canonical Name) map your hostname to another hostname.

What is resource record type A refers to?

A resource record, commonly referred to as an RR, is the unit of information entry in DNS zone files; RRs are the basic building blocks of host-name and IP information and are used to resolve all DNS queries. Resource records exist as many types to provide extended name-resolution services.

What is a AAAA Cname?

The record AAAA (also quad-A record) specifies IPv6 address for given host. So it works the same way as the A record and the difference is the type of IP address. Canonical Name records (CNAME) The CNAME record specifies a domain name that has to be queried in order to resolve the original DNS query.

What is DNS record type A?

A Records. A Records are the most basic type of DNS record and are used to point a domain or subdomain to an IP address. Assigning a value to an A record is as simple as providing your DNS management panel with an IP address to where the domain or subdomain should point and a TTL.

What is DNS zone types?

DNS Zone Types There are two types of zone files: A DNS Master File which authoritatively describes a zone. A DNS Cache File which lists the contents of a DNS cache—this is only a copy of the authoritative DNS zone.

What is the most commonly used DNS resource record?

The most common DNS record types are:Address Mapping record (A Record)—also known as a DNS host record, stores a hostname and its corresponding IPv4 address.IP Version 6 Address record (AAAA Record)—stores a hostname and its corresponding IPv6 address.More items…