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universal international freephone number (UIFN)

For international toll freephone (UIFN) services, the International Telecommunication Union (ITU) has defined the service code +800. This country code is followed by an eight-digit call number, so that the entire UIFN number has 12 digits: +800 xx xx xx. The plus sign stands for the traffic separation digit and is 00 in Germany. In addition, there is a definition for a 12-digit call number extension.

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Englisch: universal international freephone number - UIFN
Updated at: 14.11.2011
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