Well, you would hope not. There has been a general principle that if a policy change makes a domain name no longer valid, the domain can stay in existence as long as it is renewed.
There are .uk domains that pre-date nominet and exist in spite of current policies not allowing them and the same is true for many domain heirachies.
As far as I am aware it is current policy that one and two letter .com domains are not allowed, but there is x.com and bt.com still in use and many others.
However, to my surprise, we have been advised that one of our domains is to be deleted. The reason being that a policy now in place, after they were registered, says they are no longer valid. One of them is aa®.com.
So, I am trying to find out. Is this some change in policy or rules, or law, that means when domain names no longer meet current rules then they will be deleted?
Do people like BT need to be worried that bt.com will be deleted?
Or have we been singled out for special treatment by verisign & ICANN I wonder?
I'll try and get to the bottom of it. Needless to say the wording of the contract we have with teh rgeistrar does not seem to allow them to delete the domain by my reading. So it will be interesting to see what happens if that gets to court.
P.S. the two letter thing is what I have read on forums after much googling. Would be nice to know for sure if that is policy or not to allow two letter and one letter domains in .com. Maybe it is, and hence this is a non issue for x.com and bt.com. Even so, it is an issue if policy changes can cause existing domains to be deleted as seems to be happening to us.