Understanding dot in the end of hostname

Anurag Bhatia
This is a very popular mistake admins make - it’s missing . i.e dot in the end of hostname. This causes serious problems (and lot of frustration!). E.g taking example of popular Google’s cname record As we know if one would like to use, he has to point the CNAME record to “”. Now here if one misses dot in the end of - it will give a real value like: