Robtex

Up: 216.250.152.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.250.156.0/23
Down right: 216.250.158.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.250.156.9	PTR	216-250-156-9.host.secantnet.net
216.250.156.9	A	mail.secantcorp.com
216.250.156.17	A	216-250-156-17.host.secantnet.net
216.250.156.20	A	aunalytics.com
216.250.156.21	A+PTR	216-250-156-21.host.secantnet.net
216.250.156.21	A	www.secantnet.net
216.250.156.21	A	www.secantcorp.com
216.250.156.22	A+PTR	www.secantcorp.com
216.250.156.75	A+PTR	216-250-156-75.host.secantnet.net
216.250.156.75	A	mail.portagelibrary.info
216.250.156.75	A	mail.portage-library.org
216.250.156.89	PTR	216-250-156-89.host.secantnet.net
216.250.156.89	A	portage-library.org
216.250.156.89	A	www.pdl.lib.mi.us
216.250.156.90	PTR	216-250-156-90.host.secantnet.net
216.250.156.163	A+PTR	216-250-156-163.host.secantnet.net
216.250.156.163	A	shilyspromise.org
216.250.156.163	A	robhall.org
216.250.156.165	A	swmcfoundation.org
216.250.156.179	A	mail.unitedecu.org
216.250.156.233	A+PTR	216-250-156-233.host.secantnet.net
216.250.156.247	A+PTR	216-250-156-247.host.secantnet.net
216.250.157.3	A+PTR	216-250-157-3.host.secantnet.net
216.250.157.32	PTR	216-250-157-32.host.secantnet.net
216.250.157.48	A+PTR	216-250-157-48.host.secantnet.net
216.250.157.60	A	service.leveldata.com
216.250.157.140	A+PTR	216-250-157-140.host.secantnet.net
216.250.157.144	A+PTR	216-250-157-144.host.secantnet.net
216.250.158.2	A	216-250-158-2.host.secantnet.net
216.250.158.43	PTR	216-250-158-43.host.secantnet.net
216.250.158.43	A	mail.kalamazoosmiles.com
216.250.158.43	A	mail.scarponeco.com
216.250.158.44	PTR	216-250-158-44.host.secantnet.net
216.250.158.44	A	mail.kalamazoosmiles.com
216.250.158.44	A	mail.scarponeco.com
216.250.158.226	A+PTR	216-250-158-226.host.secantnet.net
216.250.158.226	A	ns2.secantnet.net
216.250.159.0	A+PTR	216-250-159-0.host.secantnet.net
216.250.159.105	A	216-250-159-105.host.secantnet.net