Are 855, 866, 877, and 888 toll free numbers?
Yes. 800, 888, 877, 866 and 855 are all toll free prefixes and work identically within the United States, Canada, Puerto Rico, and the U.S. Virgin Islands. The 800 prefix was the first available, so you will often hear toll free numbers interchangeably referred to as "800 numbers". The prefixes 888, 877, 866 and most recently 855 were released to meet an increasing demand from small businesses.
