Robtex

Up: 216.31.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.31.72.0/23
Down right: 216.31.74.0/23

IP	Type	Hostname
216.31.72.7	PTR	216-031-72-7.abq.static.fttx.citylinkfiber.net
216.31.72.33	PTR	216-031-72-33.abq.static.fttx.citylinkfiber.net
216.31.72.50	PTR	216-031-72-50.abq.static.fttx.citylinkfiber.net
216.31.72.90	PTR	216-031-72-90.abq.static.fttx.citylinkfiber.net
216.31.72.105	PTR	216-031-72-105.abq.static.fttx.citylinkfiber.net
216.31.72.247	PTR	216-031-72-247.abq.static.fttx.citylinkfiber.net
216.31.72.249	PTR	216-031-72-249.abq.static.fttx.citylinkfiber.net