Comcast Corp. says it has broadened reach of its free international calling to India, Mexico, China, Singapore and South Korea for those who subscribe to Xfinity Voice Unlimited. Xfinity Voice's free international calling is now available to nearly half the world, the company says.

Xfinity Voice Unlimited can be purchased as part of a double- or triple-play package with TV or Internet services, or as a standalone $45-a-month service. The upgraded international calling is now available for customers in Atlanta, Chicago, Detroit, Nashville and Miami. The upgrade will be extended to Philadelphia next week.