Robtex

Up: 216.1.6.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.1.6.0/25
Down right: 216.1.6.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.1.6.130	A+PTR	mail.hmk-ins.com
216.1.6.195	A+PTR	fs.pennsgrant.com
216.1.6.196	A	ns2.jgrayconsulting.com
216.1.6.206	A+PTR	webserver.jgrayconsulting.com
216.1.6.206	A	mail.manoratyorktown.com
216.1.6.206	A	ns1.jgrayconsulting.com
216.1.6.210	A+PTR	mail.pennsgrant.com