There are currently ∞ PoPs across ∞ cities and with a presence in all 6 consumer-inhabited continents. (If you know of a datacenter in Antarctica, let me know!)
While the code is written by one person (me!), the open source community plays a huge role in the CDN infrastructure. Special thanks to fosshost for their support and partnership in the project. Want to get involved? Feel free to send an email to ved.rviled@ofni or hop in #delivr on freenode and ask away!