Robtex

Up: 208.72.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.72.40.0/22
Down right: 208.72.44.0/22

IP	Type	Hostname
208.72.40.146	A	hajduguitars.com
208.72.41.130	PTR	208-72-41-130.everwave.com
208.72.41.130	PTR	mail.discovercompass.org
208.72.42.59	PTR	208-72-42-59.everwave.com
208.72.42.59	A	mail.krabacher.com
208.72.44.66	A	mail1.krabacher.com
208.72.44.74	PTR	208-72-44-74.everwave.com
208.72.46.74	A	aspenmusic.org
208.72.47.2	PTR	208-72-47-2.everwave.com
208.72.47.18	PTR	208-72-47-18.everwave.com
208.72.47.19	PTR	208-72-47-19.everwave.com
208.72.47.34	PTR	208-72-47-34.everwave.com
208.72.47.40	PTR	208-72-47-40.everwave.com
208.72.47.48	PTR	208-72-47-48.everwave.com
208.72.47.49	PTR	208-72-47-49.everwave.com
208.72.47.59	PTR	208-72-47-59.everwave.com
208.72.47.67	PTR	208-72-47-67.everwave.com
208.72.47.72	PTR	208-72-47-72.everwave.com
208.72.47.81	PTR	208-72-47-81.everwave.com
208.72.47.88	PTR	208-72-47-88.everwave.com
208.72.47.107	PTR	208-72-47-107.everwave.com
208.72.47.112	PTR	208-72-47-112.everwave.com
208.72.47.115	PTR	208-72-47-115.everwave.com
208.72.47.120	PTR	208-72-47-120.everwave.com
208.72.47.137	PTR	208-72-47-137.everwave.com
208.72.47.160	PTR	208-72-47-160.everwave.com
208.72.47.161	PTR	208-72-47-161.everwave.com
208.72.47.168	PTR	208-72-47-168.everwave.com
208.72.47.169	PTR	208-72-47-169.everwave.com
208.72.47.184	PTR	208-72-47-184.everwave.com
208.72.47.185	PTR	208-72-47-185.everwave.com
208.72.47.209	PTR	208-72-47-209.everwave.com
208.72.47.216	PTR	208-72-47-216.everwave.com
208.72.47.233	PTR	208-72-47-233.everwave.com
208.72.47.235	PTR	208-72-47-235.everwave.com
208.72.47.242	PTR	208-72-47-242.everwave.com
208.72.47.249	PTR	208-72-47-249.everwave.com
208.72.47.250	PTR	208-72-47-250.everwave.com