Understanding CName record FAQs

Q1. What is the difference between CName and A record with example ?

 

CName makes one domain name an alias of another i.e all aliased domain gets all the subdomains and DNS records of the original.

 

Example of a CNAME record: “qiblah.whatsnew.ng CNAME dev.whatsnew.ng” where ‘dev.whatsnew.ng’ is A record listing an IP address, and ‘qiblah.whatsnew.ng’ points to ‘dev.whatsnew.ng’.

A record assigns an IP address to a domain or subdomain name in which no two A records refer to the same IP address.

 

Q2. When and where will you apply CName

When I want to have as many subdomains as I wish without having to specify the IP for every record i.e I will use CName if I have more services pointing to the same IP.

 

Q3.Do you know any restriction of CName ?

CNAMEs cannot change the HTTP default of 80 to any other port number.

It doesn’t allow fowarding of a domain to a specific web page.

 

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.

Q4. Do you think CName is useful ?

Yes it’s, as I have to update only one record if there is a change of IP address.

 

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