Robtex

Up: 216.32.220.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 216.32.220.0/24
Down right: 216.32.221.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.32.220.4	A	vna1kav.watchguard.com
216.32.220.8	PTR	mx7.ffifteeneagle.com
216.32.220.26	PTR	mdb1.nwcrow.com
216.32.220.26	A	vant.bomgarcloud.com
216.32.220.33	PTR	mail1b.nickeltwo.com
216.32.220.38	A	graham.bomgarcloud.com
216.32.220.47	A	pbwt.bomgarcloud.com
216.32.220.56	A	www.afbadmin.com
216.32.220.56	A	mail.afb.org
216.32.220.56	A	*.afb.org
216.32.220.77	PTR	mxaol1.nwhawk.com
216.32.220.92	A	ehvalidationsystem.com
216.32.220.166	A	usanativ.bomgarconnect.com
216.32.220.224	A	harvardhuit.bomgarcloud.com
216.32.220.224	A	remote.huit.harvard.edu
216.32.221.149	PTR	mail.iscom.net