Stats
Y Combinator · Winter 2023, Summer 2023 · 1 November 2026

What domains do YC’s 2023 startups use?

Of the 482 startups in Y Combinator’s 2023 batches that have a website, 50% use a .com and 23% a .ai.

50%
on .com, 2022: 53%
23%
on .ai, 2022: 13%
1 in 5
startups off .com find the .com of their name for sale

See what the .com of your name is worth before you pick .ai or .io →

Which extensions the 2023 startups use

  1. .com50%
  2. .ai23%
  3. .io7%
  4. .dev5%
  5. .co3%
  6. .app2%
  7. 32 more extensions10%

Batch by batch

Winter 2023267.com48%.ai20%
Summer 2023215.com53%.ai26%

Is the .com of a 2023 YC startup’s name for sale?

242 of the 2023 startups are not on a .com. For 52 of them (1 in 5), the .com of their name is for sale, and 4 more are parked. 183 are registered with no sale listing; some are the startup’s own redirect. 3 are unregistered.

  1. For sale21%
  2. Parked2%
  3. Registered, no sale listing76%
  4. Unregistered1%

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.