Robtex

Up: 216.229.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.229.36.0/23
Down right: 216.229.38.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.229.36.21	A+PTR	dsl-ppp.21.36.229.216.den.dyn.pcisys.net
216.229.36.21	A	bkingnutrisiotak.com
216.229.36.21	A	ubatarealidade.com.br
216.229.36.104	A+PTR	dsl-ppp.104.36.229.216.den.dyn.pcisys.net
216.229.37.34	A+PTR	avail.pcisys.net
216.229.37.35	A+PTR	avail.pcisys.net
216.229.37.36	PTR	avail.pcisys.net
216.229.37.37	A+PTR	avail.pcisys.net
216.229.37.38	A+PTR	avail.pcisys.net
216.229.37.39	A+PTR	avail.pcisys.net
216.229.37.40	A+PTR	avail.pcisys.net
216.229.37.41	A+PTR	avail.pcisys.net
216.229.37.42	A+PTR	avail.pcisys.net
216.229.37.43	PTR	available.pcisys.net
216.229.37.43	A	avail.pcisys.net
216.229.37.44	A+PTR	avail.pcisys.net
216.229.37.45	A+PTR	avail.pcisys.net
216.229.37.46	PTR	bjgavlas.pcisys.net
216.229.37.46	A	avail.pcisys.net
216.229.37.47	A+PTR	avail.pcisys.net
216.229.37.48	A+PTR	avail.pcisys.net
216.229.37.49	PTR	avail.pcisys.net
216.229.37.50	A+PTR	avail.pcisys.net
216.229.37.51	PTR	cstork.pcisys.net
216.229.37.51	A	avail.pcisys.net
216.229.37.52	PTR	avail.pcisys.net
216.229.37.53	A+PTR	avail.pcisys.net
216.229.37.54	PTR	avail.pcisys.net
216.229.37.55	A+PTR	avail.pcisys.net
216.229.37.56	A+PTR	avail.pcisys.net
216.229.37.57	PTR	stosh.devlin-haggard.com
216.229.37.57	A	avail.pcisys.net
216.229.37.58	PTR	avail.pcisys.net
216.229.37.59	A+PTR	avail.pcisys.net
216.229.37.60	A+PTR	avail.pcisys.net
216.229.37.61	A+PTR	avail.pcisys.net
216.229.37.62	PTR	available.pcisys.net
216.229.37.62	A	avail.pcisys.net
216.229.37.74	PTR	whittet-cust.den.sta.pcisys.net
216.229.37.116	A	guideworkstv.com
216.229.37.165	PTR	dencore01.denadm.pcisys.net
216.229.37.177	A	sean-dsl.pcisys.net
216.229.38.21	A	bkingnutrisiotak.com
216.229.38.21	A	informarnet.com.br
216.229.38.21	A	tactictennis.com
216.229.38.57	A	cafeteria-57.38.229.216.cos.sta.pcisys.net
216.229.38.66	PTR	b2094-2-p-remote
216.229.38.113	PTR	a1359-gw.qmoe.pcisys.net
216.229.38.137	A	a1360-gw.qmoe.pcisys.net
216.229.38.146	A+PTR	a1367-cust.qmoe.pcisys.net
216.229.38.154	PTR	s105-cust.qmoe.pcisys.net
216.229.39.90	PTR	a1339-90.39.229.216.cos.sta.pcisys.net
216.229.39.90	A	mail.pediatricgastroenterologyofcoloradosprings.net
216.229.39.90	A	mail.pedsgi-cs.net
216.229.39.114	A+PTR	a1342-114.39.229.216.cos.sta.pcisys.net
216.229.39.130	A	mail.directbuy379.com