: Blah.com works, www.blah.com doesn't I've found many a common question but unfortunately none of them really directly answered my inquiry, below is a copy paste of the info I am provided by

Posted in: #Cname #Dns #IpAddress #Nameserver

I've found many a common question but unfortunately none of them really directly answered my inquiry, below is a copy paste of the info I am provided by xname.org I've replaced my .com with blah.com, my email with blah.yahoo.com, and my IP address with 42.42.42.42.

$TTL 86400 ; Default TTL
blah.com. IN SOA ns0.xname.org. blah.yahoo.com. (
2013042110 ; serial
10800 ; Refresh period
3600 ; Retry interval
604800 ; Expire time
10800 ; Negative caching TTL
)

$ORIGIN blah.com.
IN NS ns1.xname.org.
IN NS ns0.xname.org.
IN NS ns2.xname.org.
IN MX 10 blah.com.
blah.com. IN A 42.42.42.42

IN CNAME blah.com.

So blah.com works but blah.com doesn't. I initially tried to put just plain www for the cname, but found some reference to adding the trailing dot to it. The other uncertainty I have is whether the blah.com in "x in cname blah.com" should have its trailing dot or not.

I know this should be obvious, and perhaps even easy but I cannot find an answer to this anywhere, I did find some solutions suggesting I put blah.com as an A listing pointing to my IP but if I can help it I'd prefer only have my IP listed once as it's a dynamic IP and the fewer places I need to update it when it changes the better.