This is a small tip which shows you how to know an IP address of a given domain name. The commonly used way is command ping. Let's have a look to how it works.
PING blogspot.l.google.com (22.214.171.124) 56(84) bytes of data.
I can alternatively use another way to do that by using command host as the following
vntutor.blogspot.com is an alias for blogspot.l.google.com.
blogspot.l.google.com has address 126.96.36.199
The second way is a DNS lookup utility which is not only tell you what is IP address but also related alias around.