Edited, memorised or added to reading list

on 09-Sep-2015 (Wed)

Do you want BuboFlash to help you learning these things? Click here to log in or create user.

An A record or address record
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
R NS SOA SRV TXT NAPTR The above DNS records are mostly used in all DNS Configurations. Now we will see each one with examples. A Record <span>An A record or address record. Address Record, assigns an IP address to a domain or subdomain name. When the domain name system was designed it was recommended that no two A re




you might use a "*.somedomain.tld" A record to allow WHATEVER.somedomain.tld to be resolved to your IP, though a wildcard CNAME record is often better than a wildcard A record
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
all the requests for www.somedomain.tld will be sent to a server with that IP. Basically is useful to use an A record when you have subdomains residing on various systems. Usefultip: <span>you might use a "*.somedomain.tld" A record to allow WHATEVER.somedomain.tld to be resolved to your IP, though a wildcard CNAME record is often better than a wildcard A record. Example of A Record with Syntax example.com. IN A 69.9.64.11 Where IN indicates Internet




IN indicates Internet
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
to your IP, though a wildcard CNAME record is often better than a wildcard A record. Example of A Record with Syntax example.com. IN A 69.9.64.11 Where <span>IN indicates Internet A indicates the Address record. The above example indicate that the IP Address for the domain example.com is 69.9.64.11 AAAA Record &#13




A CNAME record or canonical name record makes one domain name an alias of another. The aliased domain gets all the subdomains and DNS records of the original
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
nsition and coexistence between IPv4 and IPv6 networks.An IPv4 nameserver can provide IPv6 addresses: linux aaaa 3ffe:1900:4545:2:02d0:09ff:fef7:6d2c CNAME Record <span>A CNAME record or canonical name record makes one domain name an alias of another. The aliased domain gets all the subdomains and DNS records of the original. You should use a CNAME record whenever you want associate a new subdomain to an already existing A record; i.e. you can make "www.somedomain.tld&quot




You should use a CNAME record whenever you want associate a new subdomain to an already existing A record
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
CNAME Record A CNAME record or canonical name record makes one domain name an alias of another. The aliased domain gets all the subdomains and DNS records of the original. <span>You should use a CNAME record whenever you want associate a new subdomain to an already existing A record; i.e. you can make "www.somedomain.tld" to "somedomain.tld", which should already have been assigned an IP with an A record. T




CNAME will NOT allow you to foward a domain to a specific web page. Use a webhop for that. Port numbers can be changed with webhops, as well; CNAMEs cannot change the HTTP default of 80 to any other port number
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
Example of a CNAME record: "stuff.everybox.com CNAME www.everybox.com" where 'www.everybox.com' is an A record listing an IP address, and 'stuff.everybox.com' points to 'www.everybox.com'. <span>It will NOT allow you to foward a domain to a specific web page. Use a webhop for that. Port numbers can be changed with webhops, as well; CNAMEs cannot change the HTTP default of 80 to any other port number. Do not use CNAME defined hostnames in MX records. For example, this is not recommended Example Of CNAME With syntax




Do not use CNAME defined hostnames in MX records
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
ow you to foward a domain to a specific web page. Use a webhop for that. Port numbers can be changed with webhops, as well; CNAMEs cannot change the HTTP default of 80 to any other port number. <span>Do not use CNAME defined hostnames in MX records. For example, this is not recommended Example Of CNAME With syntax mail.example.com IN CNAME mail.example.net wher




A PTR record or pointer record maps an IPv4 address to the canonical name for that host. Setting up a PTR record for a hostname in the in-addr.arpa domain that corresponds to an IP address implements reverse DNS lookup for that address. For example www.name.net has the IP address 122.0.3.16, but a PTR record maps 16.3.0.122.in-addr.arpa.
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
Preference numbers, the client simply attempts all equal Preference servers in random order, and then goes to MX record with the next highest Preference number. PTR Record <span>A PTR record or pointer record maps an IPv4 address to the canonical name for that host. Setting up a PTR record for a hostname in the in-addr.arpa domain that corresponds to an IP address implements reverse DNS lookup for that address. For example www.name.net has the IP address 122.0.3.16, but a PTR record maps 16.3.0.122.in-addr.arpa. Example of PTR Record with syntax 16.3.0.122.in-addr.arpa. IN PTR name.net Here as you see the IP Address is reversed and added with in-addr.arpa &




16.3.0.122.in-addr.arpa. IN PTR name.net

Here as you see the IP Address is reversed and added with in-addr.arpa and this has come to the left side while the actual domain name has gone to right side of IN PTR.

This is mostly used as a security and an anti-spam measure wherein most of the webservers or the email servers do a reverse DNS lookup to check if the host is actually coming from where it claims to come from. It is always advisable to have a proper reverse DNS record (PTR) is been setup for your servers especially when you are running a mail / smtp server
statusnot read reprioritisations
last reprioritisation on reading queue position [%]
started reading on finished reading on

DNS Records Explained with Syntax and examples, DNS Records Tutorials
lements reverse DNS lookup for that address. For example www.name.net has the IP address 122.0.3.16, but a PTR record maps 16.3.0.122.in-addr.arpa. Example of PTR Record with syntax <span>16.3.0.122.in-addr.arpa. IN PTR name.net Here as you see the IP Address is reversed and added with in-addr.arpa and this has come to the left side while the actual domain name has gone to right side of IN PTR. This is mostly used as a security and an anti-spam measure wherein most of the webservers or the email servers do a reverse DNS lookup to check if the host is actually coming from where it claims to come from. It is always advisable to have a proper reverse DNS record (PTR) is been setup for your servers especially when you are running a mail / smtp server. NS Record An NS record or name server record maps a domain name to a list of DNS servers authoritative for that domain. Delegations d