The iNum (international number) initiative was a project by Voxbone to create a global dial code for Voice over IP communications.
Due to slow adoption, cost and compatibility issues, and the eventual lack of interest by Voxbone in maintaining the system, it was decommissioned in June 2020.
Popular VoIP providers offering iNum numbers to the general public included Callcentric,[5] ippi,[6] Localphone[7] and VoIP.ms.
[11] Country code +888 was allocated for the United Nations Office for the Coordination of Humanitarian Affairs (OCHA) international disaster response and implemented using the iNum platform.
[13] Google Voice began supporting calls to iNum in 2012, initially at no cost, but in 2013 it set a rate of $0.03 per minute.
[17] Callcentric, one of the initial supporters, reluctantly discontinued its iNum service in November 2019 due to incompatibility after an equipment upgrade.