Similar to Au_one_ブログ

.tj

.tk

.tl

.tn

.to

.tokyo

.tr

Transifex

Tripod (web hosting)

.tt

.tv

.tw

.ua

.ug

.uk

Uniform Resource Identifier

Urchin (software)

.uy

.uz

.vc

.ve

.vg

Virtual private network

Visual.ly