.EU is widely used in the European Union [1], and is over a decade old. You should probably find a better way to block spam than blocking a whole TLD.<p>[1] e.g. The European Union&#x27;s own site, <a href="http:&#x2F;&#x2F;europa.eu&#x2F;" rel="nofollow">http:&#x2F;&#x2F;europa.eu&#x2F;</a>,  and lots of European science projects I&#x27;ve seen.