Is your website accessible without the “www” subdomain?

It suprises me how many big name domain names aren't configured to resolve without the "www" subdomain. Not only is this bad practice - the website becomes less accessible when typing in the URL manually - but it will also cause problems when publicizing links to other mediums such as print or radio, where the "www" is considered as clutter.

I did some Google research:

Out of the top 10 ".za" domain suffix results, 70% of the sites failed:
gov.za, mg.co.za, anc.org.za, polity.org.za, truth.org.za, uct.ac.za, unisa.ac.za.

Out of the top 10 ".co.za" domain suffix results, 50% of the sites failed:
mg.co.za, jse.co.za, bday.co.za, southafrica.co.za, btimes.co.za (sundaytimes.co.za).

Off the top of my head, the following random names I thought up and tried also failed:
mtn.co.za (heh), fnb.co.za, oldmutual.co.za, itweb.co.za, telkom.co.za (they haven't even heard of the title tag yet, apparently!), nedbank.co.za, sony.co.za.

Disgusting, really!