Here’s the tragedy: Reborn! has 203 episodes. The English dub, produced by Animax for Southeast Asian broadcast, only covered the first —roughly the end of the "Daily Life Arc" and the very beginning of the "Ring Battles Arc." Discotek Media rescued the license and released the first season on DVD in North America in 2016, but they did not produce new dubs for the remaining 170 episodes.
While they dubbed more episodes than Viz, they still did not complete the entire series. What Happens in Episode 1? katekyo hitman reborn english dub episode 1
Several factors contributed to this "dub curse": Here’s the tragedy: Reborn
You may find old Viz Media DVDs on eBay, but they only contain the first two volumes of the series. Why Was the Dub Cancelled? katekyo hitman reborn english dub episode 1