@bitcoin2x - no Bit-Coins.org is the one up for sale ( BitCoins.org is owned by BitCoin.org so I doubt it will ever be for sale and if it would be I wouldn't be surprised selling in 6 or 7 figures ).
@ nocroom - well closest as in shortest would be bitco.in - I don't see how b.itcoin.io is good as there are numerous hacks that can be done in any extension and in io as well ( bit.coin.io , bi.tcoin.io ,... ) I'd much rather have bitcoin.io than some hacks
and renewal fees for .io aren't cheap as well ( around $80-$100 if I'm not mistaken ) .