Toll free numbers are by nature assigned to the country of their origination and therefore are generally NOT accessible from other countries. However, there are some exceptions to this general rule. For example US Toll Free numbers are accessible from Canada and vice versa. There maybe some other exceptions where US Toll free numbers could be reachable from some telecom providers in the UK and some other countries, but most of the time this accessibility is NOT uniform and also is NOT free, meaning the callers will be charged for a regular US call even if they can reach a toll free number of another country. Therefore, with the exception of US Toll Free numbers being accessible from Canada, it is best to assume toll free numbers are NOT accessible from outside of their origination country and plan accordingly.