[disdev]

A few NSA.gov.cn addresses too...

[vomitcuddle]

aka the chinese National School of Administration

[jonknee]

N*A is a very common acronym thanks to National and Administration/Association. There are NSAs all over the place.

[miga]

A few @nsa.gov.pl addresses, I conclude that the list is probably fake.

[yread]

Naczelny Sąd Administracyjny

http://www.nsa.gov.pl/

[bdg]

You don't know if nsa.gov.pl is a valid domain. You don't know the purpose of that domain or organization.

You need more evidence to believe accurately: http://lesswrong.com/lw/jn/how_much_evidence_does_it_take/