Top-level domains

Every domain name ends in a top-level domain (TLD) name, which is always either one of a small list of generic names (three or more characters), or a two characters territory code based on ISO-3166 (there are few exceptions and new codes are integrated case by case). Top-level domains are sometimes also called first-level domains.

The generic top-level domain (gTLD) extensions are:

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

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

Infrastructure : .arpa .root

Startup phase : .asia .tel

Proposed : .berlin .bzh .cym .gal .geo .kid .kids .mail .nyc .post .sco
.web .xxx

Deleted/retired : .nato

Reserved : .example .invalid .localhost .test

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

Unofficial : see Alternative DNS roots

The country code top-level domain (ccTLD) extensions are:

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 .bw .by
.bz .ca .cc .cd .cf .cg .ch .ci .ck .cl .cm .cn .co .cr .cu .cv .cx .cy .cz
.de .dj .dk .dm .do .dz .ec .ee .eg .er .es .et .eu .fi .fj .fk .fm .fo .fr .ga
.gd .ge .gf .gg .gh .gi .gl .gm .gn .gp .gq .gr .gs .gt .gu .gw .gy .hk .hm
.hn .hr .ht .hu .id .ie .il .im .in .io .iq .ir .is .it .je .jm .jo .jp .ke .kg .kh
.ki .km .kn .kr .kw .ky .kz .la .lb .lc .li .lk .lr .ls .lt .lu .lv .ly .ma .mc .md
.mg .mh .mk .ml .mm .mn .mo .mp .mq .mr .ms .mt .mu .mv .mw .mx
.my .mz .na .nc .ne .nf .ng .ni .nl .no .np .nr .nu .nz .om .pa .pe .pf .pg
.ph .pk .pl .pm .pn .pr .ps .pt .pw .py .qa .re .ro .ru .rw .sa .sb .sc .sd
.se .sg .sh .si .sk .sl .sm .sn .sr .st .sv .sy .sz .tc .td .tf .tg .th .tj .tk
.tl .tm .tn .to .tr .tt .tv .tw .tz .ua .ug .uk .us .uy .uz .va .vc .ve .vg .vi .vn
.vu .wf .ws .ye .yt .yu .za .zm .zw

Reserved/unassigned : .eh .kp .me .rs .um

Allocated/unused : .bv .gb .sj .so

Phaseout : .su .tp

Deleted/retired : .cs .dd .zr