A: No. Eaglercraft official versions are only 1.5.2 and 1.8.8 . The search for "Eaglercraft 172" is a common mistake because players are looking for a 1.7.2-style PvP experience. Instead, use EaglercraftX 1.8.8 , which offers the same classic combat and gameplay as the Minecraft 1.7/1.8 era.
If you want to take full control of your multiplayer experience, you can set up your own Eaglercraft server on a home computer or a cloud machine. According to the comprehensive Eaglercraft server tutorial on GitHub, there are multiple server versions available, each with different requirements and features. eaglercraft 172
Here is how the download and customization process works: use EaglercraftX 1.8.8