The organization that supervises internet addressing is

The organization that supervises internet addressing is "ICANN".

ICANN stands for the "Internet Corporation for Assigned Names and Number", and it refers to a non-profit association in charge of organizing the support and strategies of a few databases identified with the namespaces of the Internet, guaranteeing the system's steady and secure operation.ICANN plays out the technical maintenance work of the Central Internet Address pools and DNS root zone registries in accordance with the Internet Assigned Numbers Authority (IANA) work contract.

The answer is yes it's correct they have to guarantee that job back when they come back