UIFN Numbers
Universal International Freephone Numbers
Connect with customers across 60+ countries using one toll-free number. Universal international freephone numbers make it easier for international customers to reach you.
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Global Inbound Voice Coverage
Unified International Freephone Number Availability
UIFN numbers are available in 60+ countries, including the United States, the United Kingdom, Canada, Japan, and Germany.
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Common Questions about Unified International Freephone Numbers
The 800 format and works in multiple countries under a single registration.
First, it’s important to note that UIFN numbers are globally accessible—meaning that your customers in various UIFN countries can reach you at any time without having to worry about long-distance charges or dialing complicated international codes.
UIFN is currently supported in over 60 countries. You must activate it in at least two to meet program requirements.
While UIFN (Universal International Freephone Number) and ITFS (International Toll-Free Service) may seem similar in nature, there are specific differences that set them apart.
A UIFN number is a single international number that can be dialed from multiple countries without incurring long-distance charges. This makes it an attractive option for multinational corporations looking to streamline their customer support services under one easy-to-remember number. However, UIFN requires participation in the service by individual countries and also mandates a company's presence in at least two participating nations.
ITFS, on the other hand, is a country-specific toll-free number assigned by each nation individually. Despite requiring different numbers for each country served, ITFS offers more comprehensive coverage than UIFN, as it typically includes more nations and does not necessitate a physical presence within their borders. ITFS numbers are also often easier to implement and allow for greater customization according to local calling conventions.
There is a one-time ITU registration fee of $500 per number. Monthly pricing depends on call volume and destinations.
Yes. Universal international freephone numbers purchased from AVOXI can easily integrate with your existing phone system or CCaaS environment using SIP or API.
While UIFN offers significant advantages, there are important restrictions to consider:
- Country Availability
UIFN only works in the 60+ countries participating in the ITU program. If your key markets aren't included, you'll need country-specific toll-free numbers (ITFS) for those regions. - Mobile Accessibility
Not all participating countries support UIFN calls from mobile phones. In some markets, customers can only dial your UIFN from landlines. This is a critical consideration if your customer base primarily uses mobile devices. - Dialing Variations
While UIFN uses a standardized format, dialing conventions can vary by country. Some regions require specific prefixes or access codes, which may create confusion for customers unfamiliar with international dialing. - Regulatory Requirements
Your business must maintain an operational presence in at least two participating countries to qualify for UIFN service.


