Domestic Toll-Free Numbers (DTF)

Domestic Toll-Free Numbers are a type of ITFS and work similarly to an International toll-free number in that they are free to the caller. Country-specific, these numbers can only be called within the originative country but are usually accessible from all in-country mobile networks. 

What Countries Use Domestic Toll-Free Numbers?

While most countries have international al and domestic toll-free services, only a few countries where the difference is significant, the distinction between international vs. domestic toll-free numbers is crucial in the following.


In the Philippines, domestic toll-free numbers can only be dialed from the Globe network, while ITFS can only be reached from the Sun and Smart cellular networks. Therefore, most companies will buy toll-free numbers for full coverage in the Philippines.


In Japan, domestic toll-free 0120 numbers are recommended. Japanese domestic toll-free numbers have no mobile restrictions. However, ITFS numbers are handled by many regulators and carriers with different limits, making them less reliable.

New Zealand

In New Zealand, mobile access for ITFS numbers (0800 dial-code) is blocked by default. This is not the case with DTF numbers (0809 dial-code). However, New Zealand's domestic toll-free numbers are generally more expensive than their alternative. In addition, providers like AVOXI usually disable the default mobile restrictions associated with ITFS numbers before providing them to customers. For this reason, traditional 0800 numbers are still the most preferred toll-free number type for most businesses in New Zealand.


In Singapore, all foreign companies are assigned ITFS numbers, recognized by the '800' dial prefix. Companies based in Singapore use domestic toll-free numbers, recognized by the '1-800' dial-code. However, there is no difference in functionality between these numbers.

Other Noteworthy Regions

  • Brazil: DTF numbers cannot be reached from outside of Brazil
  • South Korea: ITFS numbers (003 dial-code) are not portable. South Korea DTF numbers (0809 dial-code) are recommended for full coverage in the country
  • Taiwan: ITFS numbers (801 dial-code) cannot be accessed from the KG Telecom Network. Taiwan DTF numbers (0800 dial-code) are recommended for full coverage in the country.

If you have additional questions or are interested in getting a domestic toll-free number for your business, we'd love to hear from you! 

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August 1st, 2022


Louise Ross

Updated By:

Louise Ross



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