Their announcement uses the phrase "Working with Equinix to ensure the highest quality facility". Since Equinix is a colo provider, that implies they're running

Their announcement uses the phrase "Working with Equinix to ensure the highest quality facility". Since Equinix is a colo provider, that implies they're running in a colo. If you read their FAQ (https://www.digitalocean.com/faq https://www.digitalocean.com/faq), they're pretty clear that their other datacenters are in 3rd party colos: "We have datacenters located in the NYC area (located in the Equinix and Telx datacenters), San Francisco (Telx), and in Amsterdam (TelecityGroup)."