"I also administer the Internet Assigned Names Authority, which is the central coordinator for the Internet address space, domain names and Internet protocol conventions essential to the use and operation of the Internet"

In this quote, Jon Postel is specifying that he is responsible for managing the Internet Assigned Names Authority (IANA). This organization functions as the primary coordinator for the allocation of Internet addresses, domain names, and Internet protocol conventions. These elements are crucial for the operating and operation of the Internet. Basically, Postel is in charge of managing the resources that allow the Internet to operate smoothly and effectively. This includes ensuring that each site has a distinct domain and that all gadgets linked to the Internet have a special address. Postel's role is important in preserving the structure and organization of the Internet.