After I registered CCIE.in , Jeff mentioned that CCIE is a trademark in the US. After reading through at United States Patent and Trademark Office Home Page what I uderstand is that - as far as I don't do business in the same industry as CISCO (CCIE) i think there shouldn't be any problem. I may be wrong , so please correct me. I am an amateur in this area. I immediately searched for ccie term on sedo. There are few ccie.xx extensions for sale too including mine. In fact ccie.com is childcare exchange program and this was registered (mid 80's) before CCIE was trademarked (90's) I have been there once and gave away my .com domain before.