74 Finally, the finding that mobile broadband today “gives subscribers the capability to communicate with all NANP endpoints,” id. (emphasis added), confirms the immateriality of the Commission’s removal of the word “all” from its regulatory definition of “interconnected service.” As mentioned earlier, that regulation, until the Order, defined interconnected service as a service “that gives subscribers the capability to communicate to or receive communication from all other users on the public switched network.” 47 C.F.R. § 20.3 (prior version effective through June 11, 2015) (emphasis added). In the updated definition, the Commission left that language unchanged except that it removed the word “all.” See 47 C.F.R. § 20.3 (current version effective June 12, 2015). Mobile petitioners attach great significance to the removal of “all,” assuming that the change enabled the Commission to find mobile broadband to be an “interconnected service” even though, according to mobile petitioners, broadband users have no capability to communicate with telephone users. By excising the word “all,” mobile petitioners assert, the Commission could find that mobile broadband is an interconnected service based on the ability of users to communicate only with some in the network (fellow broadband users) notwithstanding the lack of any capability to communicate with others in the network (telephone users). Absent the latter ability, mobile petitioners argue, mobile broadband cannot actually be considered “interconnected” with the telephone network. Mobile petitioners’ argument rests on a mistaken understanding of the Commission’s actions. The Commission did not rest its finding that mobile broadband is an “interconnected service” solely on an assumption that it would be enough for broadband subscribers to be able to communicate with some in the network (only fellow IP users), even if there were no capability at all to communicate with