Here are all the (single letter)coin.in domains that are taken:
A breakdown of where the registrations are coming from:
Bcoin – Italy
Ecoin – USA
Gcoin – China
Icoin – India (our very own Mr. SM)
Kcoin.in – Vietnam
Mcoin.in – India
Rcoin.in – China
Mcoin.in – India
Rcoin.in – China
Scoin.in – India
Vcoin.in – Poland (our very own PP)
Xcoin.in – USA
Zcoin.in – Iran