Stats
Y Combinator · Winter 2019, Summer 2019 · 1 November 2026

What domains do YC’s 2019 startups use?

Of the 334 startups in Y Combinator’s 2019 batches that have a website, 68% use a .com and 7% a .ai.

68%
on .com, 2018: 69%
7%
on .ai, 2018: 5%
1 in 6
startups off .com find the .com of their name for sale

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Which extensions the 2019 startups use

  1. .com68%
  2. .ai7%
  3. .io7%
  4. .co4%
  5. .app2%
  6. .org1%
  7. 26 more extensions10%

Batch by batch

Winter 2019178.com69%.ai9%
Summer 2019156.com67%.ai5%

Is the .com of a 2019 YC startup’s name for sale?

108 of the 2019 startups are not on a .com. For 18 of them (1 in 6), the .com of their name is for sale. 90 are registered with no sale listing; some are the startup’s own redirect.

  1. For sale17%
  2. Registered, no sale listing83%

Own the .com of a startup’s name? See what it’s worth →

Source: Y Combinator’s company directory and the .com zone file, 1 November 2026.