Stats
Y Combinator · Winter 2015, Summer 2015 · 1 November 2026

What domains do YC’s 2015 startups use?

Of the 195 startups in Y Combinator’s 2015 batches that have a website, 87% use a .com and 4% a .org.

87%
on .com, 2014: 83%
4%
on .org, 2014: 6%
1 in 26
startups off .com find the .com of their name for sale

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Which extensions the 2015 startups use

  1. .com87%
  2. .org4%
  3. .io3%
  4. .ai2%
  5. .co2%
  6. .earthunder 1%
  7. 6 more extensions3%

Batch by batch

Winter 2015101.com85%.org3%
Summer 201594.com88%.org4%

Is the .com of a 2015 YC startup’s name for sale?

26 of the 2015 startups are not on a .com. For 1 of them (1 in 26), the .com of their name is for sale. 25 are registered with no sale listing; some are the startup’s own redirect.

  1. For sale4%
  2. Registered, no sale listing96%

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