tsim.in, Some USA SIM cards, especially those with unlimited India calling also have unlimited International Calling to many countries listed below. To see which SIM cards have this feature, go to the Unlimited USA SIM Card page and select a SIM card with Direct Dial to India. If that card also has calling to other countries, you will see a link to this page.
List of countries with unlimited calling to LandLines and Mobiles from USA:
Australia, Austria, Belgium, Bermuda, Brazil, Bulgaria, Canada, Chile, China, Colombia, Croatia, Cyprus, Czech Republic, Denmark, Finland, France, Germany, Greece, Guam, Hong Kong, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Kuwait, Macau, Malaysia, Malta, Martinique, Mexico, Mongolia, Netherlands, New Zealand, Norway, Pakistan(Zong), Paraguay, Peru, Philippines Smart, Poland, Portugal, Romania, Singapore, South Korea, Spain, Sweden, Thailand, Ukraine Kyivstar, United Kingdom
List of countries with unlimited calling to only LandLines from USA:
Dominican Republic, Lithuania, San Marino, Turkey, American Samoa, Andorra, Argentina, Brunei Darussalam, Costa Rica, Dominican Republic, Estonia, Gibraltar, Guadeloupe, Japan, Kazakhstan, Latvia, Lithuania, Luxembourg, Morocco, Namibia, Nigeria, Panama, Russia, San Marino, Slovakia, Slovenia, South Africa, Swaziland, Switzerland, Taiwan, Turkey, Uruguay, Venezuela