Generic top-level domains

Unsponsored
biz .com .edu .gov .info .int .mil .name .net .org

Sponsored
aero .cat .coop .jobs .museum .pro .travel

Infrastructure
arpa .root

Startup phase
mobi .post .tel

Proposed
asia .cym .geo .kid .kids .mail .sco .web .xxx

Deleted/retired
nato

Reserved
example .invalid .localhost .test

Pseudo-domains
bitnet .csnet .local .onion .uucp

Unofficial
see Alternative DNS roots

See also: Country code top-level domains

Country code top-level domains
Active:  .ac  .ad  .ae  .af  .ag  .ai  .al  .am  .an  .ao  .aq  .ar  .as  .at  .au  .aw  .ax  .az 
.ba  .bb  .bd  .be  .bf  .bg  .bh  .bi  .bj  .bm  .bn  .bo  .br  .bs  .bt  .bv  .bw  .by  .bz 
.ca  .cc  .cd  .cf  .cg  .ch  .ci  .ck  .cl  .cm  .cn  .co  .cr  .cu  .cv  .cx  […]

Transistor-Transistor Logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT), and resistors. It is notable for being a widespread integrated circuit (IC) family used in many applications such as computers, industrial controls, music synthesizers, and electronic test and measurement instruments. Because of the wide use of this logic family, signal […]