Similar to 斉藤さん_(アプリケーション)

.tj

.tk

.tl

.tn

.to

.tokyo

.tr

Transifex

Tripod (web hosting)

.tt

.tv

.tw

Typepad

.ua

.ug

.uk

Uniform Resource Identifier

Urchin (software)

.uy

.uz

.vc

.ve

.vg

Virtual private network