I already have my own domain and I would like to make access to my blog available via http://blog.mydomain.co.uk/
I am fine with managing my domain, but where do I tell WordPress the address I wish to use?
What is the IP address I should use for my DNS entry?
After you make the domain mapping purchase here > Dashboard > Store > My Upgrades and do the primary blog set up it can take between 24 – 72 hours for domain name propagation to take place throughout the internet. You can view the DNS changes here > http://www.whatsmydns.net/ What’s important during that stage is to be patient.