Your domain sounds good to me. Basically all domains sounds good if they are short and pronounce properly Content in it makes them more nice DON.
Sounds good but its up to the owner to turn it into something. A domain is only as good as the ower who manages it and spends time to build it up.
IPEXP.com can be used as a IP exploring the web - in other words make it into a proxy and you can make money
Well, imagine the possibilities. Not only you can use IP exploring, other names like IP exposure, IP experience, works as well. Definitely a good domain.
good name for proxy or you can think of some IP oriented services such as IP location , reverse look up etc good luck