Robtex

Up: 216.166.22.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.166.23.0/25
Down right: 216.166.23.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.166.23.2	PTR	216-166-23-2.fwd.datafoundry.com
216.166.23.12	A+PTR	bst.us.cardno.com
216.166.23.12	A	us.cardno.com
216.166.23.20	PTR	216-166-23-20.fwd.datafoundry.com
216.166.23.20	A	cardnobowler.com.au
216.166.23.20	A	entrix.com
216.166.23.25	A+PTR	mx1.us.cardno.com
216.166.23.30	A+PTR	ssl.us.cardno.com
216.166.23.39	A+PTR	mx2.us.cardno.com
216.166.23.40	PTR	www.cardno.com
216.166.23.52	A+PTR	mx3.us.cardno.com
216.166.23.55	A	www.synodas.com
216.166.23.59	PTR	216-166-23-59.fwd.datafoundry.com
216.166.23.59	A	www.cardnoentrix.com
216.166.23.59	A	cardnoentrix.com
216.166.23.69	A	xpoasis.com
216.166.23.71	A	vision.atcassociates.com
216.166.23.71	A	paragoncapm.com
216.166.23.90	A+PTR	216-166-23-90.fwd.datafoundry.com
216.166.23.90	A	www.apti-learn.net
216.166.23.90	A	apti-learn.com
216.166.23.91	A	lahdra.org
216.166.23.108	A	synodas.com
216.166.23.162	PTR	216-166-23-162.fwd.datafoundry.com
216.166.23.162	A	entrix.com
216.166.23.162	A	esjprojecteis.org