America
tested 1945
npt
Russia
tested 1949
npt
United Kingdom
tested 1952
npt
France
tested 1960
npt
China
tested 1964
npt
India
tested 1974
Pakistan
tested 1998
North Korea
tested 2006
Israel
tested 1979**
npt = members of Nuclear Non-Proliferation Treaty
**Not allways confirmed