If you have a domain registered, be aware there is a company called iDNS that is sending out domain name "expiration notices," the purpose of which is to get you to move your domain's registration to them.
Their prices are totally outrageous; one year renewal costs $40, as opposed to what it might be with your own provider, typically in the range of $10-$15.
What happens when many people receive these "expiration notices" is to just pay them, especially if payments are usually handled by someone in the front office.
iDNS's WWW site address is idns.ae (United Arab Emirates) which forwards to idns.to (Tonga).
The notices are very explicit that you do NOT have to move your domain to their service, so if you do this mistakenly, they will turn around and say words to the effect that "you were too stupid to read the conditions."
Trying to get a domain move undone under these circumstances can be a VERY big hassle.
In my opinion, these people are Class A dirtbags.
The address for their Canadian operation is
2900 Warden Avenue
Toronto [actually Scarborough], Ontario M1W 3Y8
According to the reverse lookup at Canada Post, this is an "RPO," or "Retail Post Office" box.