Did you try whether you computer can resolve the address to 206.111.48.22 ?
Any other machine in your net can open the website ?
Try a telnet on port 80 to this IP.
telnet 206.111.48.22 80
Press 2 or three times enter, you should receive an answer:
HTTP/1.1 400 Bad Request
Server: Microsoft-IIS/5.0
Date: Tue, 21 Jul 2009 04:29:24 GMT
Content-Type: text/html
Content-Length: 87
<html><head><title>Error</title></head><body>The parameter is incorrect. </body>
</html>
C:\Users\Lizzi> verloren.
No problem here to open the web site through DIR-655 with 1.32 firmware.