* Volcanoes that are currently erupting? This changes frequently and it's not easy to give a definitive answer. You'd need to check current news sources or resources like the Smithsonian Global Volcanism Program for this information.

* Volcanoes that have erupted in the recent past? This is a more stable answer, but it still depends on how you define "recent."

* Volcanoes that are considered "active" by scientists? This is based on their history of eruptions and potential for future activity.

Here's a breakdown of the most active regions by the above definitions:

Currently Erupting: You'll need to check current news sources or resources like the Smithsonian Global Volcanism Program to find the most active volcanoes in the world at any given time.

Recent Eruptions:

* Pacific Ring of Fire: This area encompasses the west coast of North and South America, the Aleutian Islands, the Kamchatka Peninsula, Japan, the Philippines, Indonesia, and the islands of Melanesia. It's home to many active volcanoes and sees frequent eruptions.

* Mediterranean Region: This includes Italy, Greece, Turkey, and surrounding areas. There are many active volcanoes in this region, including Mount Etna and Stromboli in Italy.

"Active" Volcanoes:

* Pacific Ring of Fire: This area is known for its high concentration of active volcanoes, based on historical records and potential for future eruptions.

* East African Rift Valley: This region stretches from Ethiopia to Mozambique and is characterized by volcanic activity.

* Iceland: Known for its geothermal activity and frequent volcanic eruptions.

To summarize:

* Eastern Part: The East African Rift Valley is home to many active volcanoes.

* Central Part: The Mediterranean Region and Iceland contain active volcanoes.

* Western Part: The Pacific Ring of Fire is the area with the most active volcanoes globally.

To get a more precise answer, specify what you mean by "active" and what region you're interested in.