dell.com works, but try any other host that is being contacted while loading www.dell.com and is hosted by akamai, such as i.dell.com
No problem via Bluewin-DSL:
$ telnet i.dell.com 80 Trying 212.243.223.139... Connected to i.dell.com (212.243.223.139). Escape character is '^]'. HEAD / HTTP/1.0
HTTP/1.0 400 Bad Request Server: AkamaiGHost Mime-Version: 1.0 Content-Type: text/html Content-Length: 187 Expires: Mon, 28 Jan 2008 17:05:56 GMT Date: Mon, 28 Jan 2008 17:05:56 GMT Connection: close
(Bad Request ? WTF?)