Stats
Y Combinator · Winter 2016, Summer 2016 · 1 November 2026

What domains do YC’s 2016 startups use?

Of the 207 startups in Y Combinator’s 2016 batches that have a website, 80% use a .com and 6% a .io.

80%
on .com, 2015: 87%
6%
on .io, 2015: 3%
1 in 41
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Which extensions the 2016 startups use

  1. .com80%
  2. .io6%
  3. .co3%
  4. .ai3%
  5. .org2%
  6. .aerounder 1%
  7. 10 more extensions5%

Batch by batch

Winter 2016113.com82%.io7%
Summer 201694.com78%.io5%

Is the .com of a 2016 YC startup’s name for sale?

41 of the 2016 startups are not on a .com. For 1 of them (1 in 41), the .com of their name is for sale. 39 are registered with no sale listing; some are the startup’s own redirect. 1 is unregistered.

  1. For sale2%
  2. Registered, no sale listing95%
  3. Unregistered2%

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