The number “0” itself is not typically considered a long-distance number. In most telephone systems, “0” is used as an operator-assisted dialing prefix or as a part of an area code or country code to indicate a long-distance or international call.

For example…

• In the United States and Canada, dialing “0” typically connects you to the operator for assistance with placing a call, and it’s not used as part of a standard long-distance dialing procedure.
• In some countries, “0” is used as a trunk prefix before the area code when making a domestic long-distance call. For example, in the United Kingdom, you might dial “0” followed by the area code to indicate a long-distance call within the country.
• In international dialing, “0” is sometimes used as part of a country code or access code. For instance, to dial out of the United States or Canada to an international destination, you would typically start with the international access code “011” followed by the country code, which might include “0” as part of it for some countries.

So, while the number “0” itself is not inherently a long-distance number, it can be part of the dialing process for making long-distance or international calls depending on the specific telephone system and dialing conventions used in a particular country.