Robtex

Up: 66.198.208.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.198.208.0/23
Down right: 66.198.210.0/23

IP	Type	Hostname
66.198.208.1	A+PTR	vail-66-198-208-1.colorado.net
66.198.208.2	A+PTR	vail-66-198-208-2.colorado.net
66.198.208.177	A+PTR	vail-66-198-208-177.colorado.net
66.198.209.146	A+PTR	vail-66-198-209-146.colorado.net
66.198.210.1	A+PTR	vail-66-198-210-1.colorado.net
66.198.210.170	PTR	vail-66-198-210-170.colorado.net