You can use eSIM Worldwide Plans in the following countries :

Asia
Armenia, Bangladesh, Brunei, Cambodia, China, Hong Kong, India, Indonesia, Israel, Japan, Kazakhstan, Laos, Macau, Malaysia, Myanmar, Pakistan, Philippines, Qatar, Saudi Arabia, Singapore, South Korea, Sri Langa, Taiwan, UAE, Uzbekistan, Vietnam

Oceania
Australia, New Zealand

USA
Canada, Brazil, Mexico Honduras, Puerto Rico, The United States of America (including Hawaii), Virgin Islands

Europe
Austria, Albania, Belgium, Bulgaria, Croatia, Czech, Denmark, England, Estonia, France, Finland, Germany, Greece, Hungary, Ireland, Isle of Man, Italy, Liechtenstein, Luxembourg, Malta, Montenegro, Netherland, North Ireland, Norway(indlucdes Svalbard Islands), Poland, Portugal, Romania, Russia, San Marino, Scotland, Serbia, Slovak, Slovenia, Spain, Sweden, Switzerland, Turkey, Ukraine, Vatican, Wales

Africa
Egypt, Ghana, South Africa