What is a Universal International Freephone Number (UIFN 800) and how does it work with Hivoox?
A Universal International Freephone Number, commonly known as a UIFN, is an international toll-free number defined by the ITU and identified by the country code 800. It allows customers in multiple countries to reach a business using a single toll-free number.
The principle is simple: the call is free for the caller, regardless of the country they are calling from, while the business receiving the call pays the communication costs.
What makes UIFN numbers different from standard toll-free numbers
Unlike national toll-free numbers, which are usually limited to a single country, UIFN numbers are designed for international use. In the United States and Canada, toll-free numbers typically use the 800 prefix, while in many other countries they appear as 0800.
With a UIFN, customers can dial the same number worldwide, without needing to adapt to local numbering formats. This makes UIFN numbers particularly attractive for international companies.
Who typically uses UIFN numbers
UIFN numbers are mainly used by businesses operating across several countries that want to provide a consistent and accessible contact point.
- International customer support centers
- Global sales and marketing teams
- Companies with clients in multiple regions
- Organizations that want a single global toll-free number
This approach reduces friction for customers and reinforces a professional, international brand image.
Country availability and current limitations
Although UIFN numbers are international by design, they are not yet accessible from every country. Participation depends on local telecommunications regulations and carrier support.
At present, UIFN numbers available through Hivoox can be reached from 63 countries. This list continues to evolve as new countries join the initiative.
Accessible countries currently include Argentina, Australia, Austria, Belgium, Brazil, Canada, China, France, Germany, Italy, Japan, South Africa, Spain, Switzerland, the United Kingdom, the United States, and many others across Europe, Asia, and the Americas.
How UIFN works with Hivoox
Through the Hivoox marketplace, businesses can subscribe to a UIFN service and manage it using VoIP and SIP-based infrastructure.
To activate a UIFN number, the following steps are required:
- Subscribe to the service through the website
- Provide a copy of a valid ID or passport
- Submit official company registration documents
- Provide proof of the company’s address
Once the order is validated and documents are approved, the assigned UIFN number and configuration details are sent by email.
Receiving calls on a UIFN number
After activation, calls can be received in several ways, depending on your setup.
- On an IP phone
- On a mobile phone using a SIP application
- On a computer with a softphone
- On an IP PBX via a SIP trunk
Calls can also be forwarded to a customer’s server IP address or to an existing phone number. In the case of call forwarding to landline or mobile numbers, additional charges apply.
Understanding call reception costs
With UIFN numbers, callers are never charged. The business receiving the calls pays for the incoming call minutes.
To ensure uninterrupted service, the account must be regularly recharged so that call costs can be deducted automatically. This allows full control over usage and budget.
A global contact solution for international businesses
UIFN numbers offer a practical way to centralize international customer contact through a single toll-free number. While availability still depends on country participation, they remain one of the most effective tools for global customer communication.
Through the Hivoox marketplace, businesses can access UIFN numbers, review supported countries, and integrate them with existing VoIP or SIP infrastructure to support international growth.