Similar to ISIS編集学校

.tr

Transifex

Tripod (web hosting)

.tt

Tumblr

.tv

.tw

Typepad

.ua

.ug

.uk

Uniform Resource Identifier

Urchin (software)

.uy

.uz

.vc

.ve

.vg

Virtual private network

Visual.ly

.vn

.vu

Vyatta

VyOS

Web Accessibility Initiative