The internet's first TLDs arrived in 1985 — .com, .net, .org, .edu, .gov and .mil, plus the first country code .us — with the first ever .com (symbolics.com) registered that March. The 2000s added extensions like .info, .biz and .mobi, and ICANN's 2012 new-gTLD program opened the floodgates from 2013, adding hundreds of extensions (.xyz, .app, .shop, geoTLDs, brand TLDs) and taking the root past a thousand TLDs.
Four decades of the namespace
The set of available domain extensions grew in distinct waves. For its first 25 years the namespace barely changed — a handful of original generics and a steadily-growing list of country codes. Then ICANN's 2012 program reshaped it almost overnight, multiplying the number of extensions by an order of magnitude. The timeline below marks the major moments, drawing on the delegation history recorded in the IANA root zone database. Dates for the modern waves are approximate launch periods, since hundreds of new gTLDs were delegated over several years rather than on a single day.
TLD launch timeline
The major waves of extensions and when they entered the root.
| Period | Wave | Extensions added |
|---|---|---|
| 1985 | The originals | .com · .net · .org · .edu · .gov · .mil · first ccTLD .us |
| 1986–88 | .int & early ccTLDs | .int; .uk, .il, .de, .au and other national codes begin |
| 2000–01 | First ICANN round | .info · .biz · .name · .pro · .museum · .aero · .coop |
| 2004–07 | Sponsored additions | .mobi · .travel · .jobs · .cat · .tel · .asia |
| 2011 | .xxx | .xxx — first adult-content sponsored TLD |
| 2012 | New-gTLD applications open | ICANN accepts ~1,900 applications for new extensions |
| 2013–14 | New gTLDs go live | .xyz · .shop · .online · .club · .guru · geoTLDs (.nyc, .london) |
| 2014–18 | Secure & brand TLDs | .app · .dev · .page · hundreds of brand TLDs |
| 2020s | Maturing namespace | 1,000+ TLDs in the root; next application round in planning |
Dates for modern waves are approximate launch periods; hundreds of new gTLDs were delegated across several years. Delegation history is recorded in the IANA root zone database.
Why the timeline matters when you choose
The age of an extension shapes how people read it. The 1985 originals — .com, .net, .org — carry four decades of familiarity and type-in trust, which is exactly why their good names are gone. The 2012 wave brought clarity and availability: extensions like .shop, .app and the geoTLDs describe what you do and still have short names free. Neither vintage ranks better than the other — search engines treat valid generic TLDs equally regardless of when they launched. So use the timeline to understand the signal an extension sends, then pick on trust, fit and availability. For the full modern set, see new TLDs.