Apart from what F1Pilot said, this also depends on DNS settings and Web Server config. I think even though www.mwave.com
and mwave.com is pointing to the same ip, the webserver is not configured to answer requests for mwave.com .
(Long story made very short. If interested in DNS, either this book DNS and Bind from Oreilly,
or Ask Mr. DNS site http://www.acmebw.com/askmrdns/archive.php
, is Highly recommended).
Stone walls do not a prison make,
Nor iron bars a cage;
Minds innocent and quiet take
That for an hermitage;
If I have freedom in my love,
And in my soul am free,
Angels alone that soar above
Enjoy such liberty. - Richard Lovelace