305, 310 poster here, working for me too now,
www not, but who the hell uses www anymore? kek
Also never knew there was a difference, learn something new everyday.
Just tried with firefox sure enough www returned error.
The network administrator for the domain "howstuffworks.com" is in charge of mapping the names in the howstuffworks.com domain to specific machines and their IP addresses. In many large companies, there will be different machines (with different IP addresses) handling WWW, FTP, Telnet and other traffic. On smaller sites, the same machine can handle everything.
The network administrator makes a list of names and IP addresses, like this:
www.howstuffworks.com - 242.128.34.54
ftp.howstuffworks.com - 242.128.34.73
The administrator can put anything in that list, because the name servers don't care. The administrator could put in scooby.howstuffworks.com, scooby.doo.howstuffworks.com and scooby.dooby.doo.howstuffworks.com, and when someone types in those names the name server will return the IP addresses associated with them.
In the case of Web sites that happen to work without the "www" prefix, it simply means that the administrator has decided that if there is no prefix, the IP address returned should be the IP address for the Web server.