International: +800 00123456 | USA: 1 855 444 3210


UIFN stands for Universal International Freephone Number. A UIFN number is an international freephone number that can be called for free in around 45 countries around the world. UIFN are also known as +800 numbers – the plus refers to the international call prefix of this number, in most countries this is 00.

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