The following table is a guide of top-level country names, showing the countries which have access to internet or general email services. The top-level country codes have been derived from the International Organization for Standardization standard ISO 3166. This includes 'telnet', 'ftp', and internet email. If this is not preceded by FI or B, it means that the connection may be a UUCP connection. An asterisk is included after FI or B for consistency.
P stands for provisional connection.
It is generally possible to assume that wherever there is a U.S. base, there will be a node reachable through gateways. However the connection may take place via UUCP and cost a lot of money. Those networks have therefore not been included. Those types of network have not been included because email and network access from Internet is sometimes barred for financial reasons. Some hobbyists have put together networks using their PCs which store and forward email to remote locations.