This document discusses the results of measurements taken on World IPv6 Day. It provides an overview of the measurement methodology, which involved 40 vantage points from CAIDA, RIPE NCC, and other networks. The measurements tracked adoption of IPv6 by looking at whether DNS records and web servers supported IPv6. On World IPv6 Day, many participants enabled IPv6 support and measurements showed increasing numbers of domains and websites available over IPv6. The document analyzes the results and concludes that IPv6 performed well and is ready for widespread adoption.