Robtex

Up: 66.32.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.32.88.0/22
Down right: 66.32.92.0/22

IP	Type	Hostname
66.32.88.9	A	nabattery.com
66.32.88.16	PTR	exchange.sparetimeinc.com
66.32.88.16	A	sparetimeinc.com
66.32.88.49	PTR	static-66-32-88-49.earthlinkbusiness.net
66.32.88.49	A	dentuitytoolkit.com
66.32.88.57	A+PTR	static-66-32-88-57.earthlinkbusiness.net
66.32.88.87	A	static-66-32-88-87.earthlinkbusiness.net
66.32.88.128	PTR	static-66-32-88-128.earthlinkbusiness.net
66.32.88.128	A	batterysystems.net
66.32.88.128	A	worldwidebattery.com
66.32.88.129	A	mail.worldwidebattery.com
66.32.88.152	A	sj.quatris.com
66.32.89.121	A	user-1120mbp.dsl.mindspring.com
66.32.90.11	A+PTR	static-66-32-90-11.earthlinkbusiness.net
66.32.90.27	A	user-1120mgr.dsl.mindspring.com
66.32.90.162	A	user-1120ml2.dsl.mindspring.com
66.32.91.39	A	user-1120mp7.dsl.mindspring.com
66.32.91.45	A	static-66-32-91-45.earthlinkbusiness.net
66.32.91.46	A	static-66-32-91-46.earthlinkbusiness.net
66.32.91.96	A	static-66-32-91-96.earthlinkbusiness.net
66.32.91.105	A+PTR	static-66-32-91-105.earthlinkbusiness.net
66.32.91.137	A+PTR	static-66-32-91-137.earthlinkbusiness.net
66.32.91.175	A	static-66-32-91-175.earthlinkbusiness.net
66.32.91.189	A	static-66-32-91-189.earthlinkbusiness.net
66.32.91.209	A	static-66-32-91-209.earthlinkbusiness.net
66.32.91.217	A	static-66-32-91-217.earthlinkbusiness.net
66.32.92.80	A	static-66-32-92-80.earthlinkbusiness.net
66.32.92.185	A	user-1120n5p.dsl.mindspring.com
66.32.92.213	A	user-1120n6l.dsl.mindspring.com
66.32.93.184	A	user-1120ndo.dsl.mindspring.com
66.32.93.225	A	user-1120nf1.dsl.mindspring.com
66.32.94.68	A	static-66-32-94-68.earthlinkbusiness.net
66.32.94.192	A	user-1120nm0.dsl.mindspring.com