Robtex

Up: 216.229.36.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.229.36.0/25
Down right: 216.229.36.128/25
(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