Robtex

Up: 216.137.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.137.152.0/22
Down right: 216.137.156.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.137.152.212	PTR	needa.com
216.137.153.42	PTR	needa.com
216.137.155.31	PTR	needa.com
216.137.155.36	A	brathall.com
216.137.155.36	A	mail.brathall.com
216.137.155.58	PTR	needa.com
216.137.155.193	PTR	needa.com
216.137.156.57	A	adlingandassociates.com
216.137.156.126	A	tannershome.com
216.137.157.102	PTR	h26.needa.com
216.137.158.17	PTR	needa.com
216.137.158.136	PTR	mail.globalhosting.com
216.137.158.139	PTR	mail.needa.com
216.137.158.201	A	mail.globalhosting.com
216.137.159.1	A+PTR	host1.needa.com
216.137.159.1	A	ns1.worldnameservers.com
216.137.159.2	A	ns1.bdowh.com
216.137.159.9	PTR	needa.com
216.137.159.10	A	mail.hostcommander.com
216.137.159.16	PTR	needa.com
216.137.159.16	A	bestdealsonhosting.com
216.137.159.25	PTR	needa.com
216.137.159.40	PTR	needa.com
216.137.159.43	PTR	needa.com
216.137.159.48	PTR	needa.com
216.137.159.49	PTR	needa.com
216.137.159.65	PTR	needa.com
216.137.159.80	PTR	mail.needa.com
216.137.159.80	A	mail.brathall.com
216.137.159.80	A	mail.extraheroes.com
216.137.159.81	PTR	needa.com
216.137.159.82	PTR	mx3.needa.com
216.137.159.88	PTR	needa.com
216.137.159.88	A	art-start.org
216.137.159.88	A	mail.jagmo.com
216.137.159.96	PTR	needa.com
216.137.159.96	A	mail.progrowthassociates.com
216.137.159.98	PTR	needa.com
216.137.159.98	A	www.biserica.org
216.137.159.98	A	biserica.org
216.137.159.136	PTR	needa.com
216.137.159.144	PTR	needa.com
216.137.159.152	PTR	needa.com
216.137.159.162	PTR	needa.com
216.137.159.203	PTR	needa.com
216.137.159.216	PTR	needa.com
216.137.159.226	PTR	vrmweb.net
216.137.159.226	A	mxkied.com
216.137.159.226	A	fantasycross.com
216.137.159.227	PTR	mail.needa.com
216.137.159.243	PTR	mail.emmsa.com
216.137.159.245	A	mail.kupsa.org
216.137.159.249	PTR	host2.needa.com
216.137.159.250	PTR	host1.needa.com