61 network.’”). And because the public switched network now includes IP addresses, the Commission found that mobile broadband qualifies as an “interconnected service,” i.e., “service that is interconnected with the public switched network” as redefined. 47 U.S.C. § 332(d)(2); see 2015 Open Internet Order, 30 FCC Rcd. at 5779–80 ¶ 391, 5786 ¶ 399. According to the Commission, then, mobile broadband meets all parts of the statutory definition of a “commercial mobile service” subject to common carrier regulation: it is a “mobile service . . . that is provided for profit and makes interconnected service available . . . to the public or . . . a substantial portion of the public.” 47 U.S.C. § 332(d)(1). We find the Commission’s reclassification of mobile broadband as a commercial mobile service under that definition to be reasonable and supported by record evidence demonstrating the “rapidly growing and virtually universal use of mobile broadband service” today. 2015 Open Internet Order, 30 FCC Rcd. at 5786 ¶ 399. In support of its reclassification decision, the Commission relied on, and recounted in detail, evidence of the explosive growth of mobile broadband service and its near universal use by the public. See id. at 5635–38 ¶¶ 88–92, 5779 ¶ 391, 5785–86 ¶¶ 398–99. In the face of that evidence, we see no basis for concluding that the Commission was required in 2015 to continue classifying mobile broadband as a “private” mobile service. B. Mobile petitioners offer two principal arguments in support of their position that mobile broadband nonetheless must be treated as a private mobile service rather than a commercial mobile service. First, they argue that “public switched network” is a term of art confined to the public switched telephone network. Second, they contend that, even if the Commission can expand the definition of public