Robtex

Up: 192.255.220.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.255.221.0/25
Down right: 192.255.221.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.255.221.34	A	hv1.hostwindsdns.com
192.255.221.35	A	hv2.hostwindsdns.com
192.255.221.36	PTR	client-192-255-221-36.hostwindsdns.com
192.255.221.38	PTR	client-192-255-221-38.hostwindsdns.com
192.255.221.42	PTR	client-192-255-221-42.hostwindsdns.com
192.255.221.45	PTR	client-192-255-221-45.hostwindsdns.com
192.255.221.48	PTR	client-192-255-221-48.hostwindsdns.com
192.255.221.66	PTR	hw.levyserver.com
192.255.221.66	A	levyserver.com
192.255.221.68	A	newstodaycentral.com
192.255.221.69	A	michaelrubin.org
192.255.221.69	A	steveemerson.com
192.255.221.69	A	thomashibbs.org
192.255.221.70	A	gazettenation.com
192.255.221.72	A	dc-4d8f8ddfaade.myshemeshventures.com
192.255.221.73	A	mymagazineportal.com
192.255.221.75	PTR	client-192-255-221-75.hostwindsdns.com
192.255.221.75	A	quicknewsmagazine.com
192.255.221.76	A	latestnewshq.com
192.255.221.77	A	virtualnewsmagazine.com
192.255.221.78	A	clicknewsonline.com
192.255.221.84	PTR	client-192-255-221-84.hostwindsdns.com
192.255.221.84	A	zachdotsey.com
192.255.221.90	A	youmintcorp.com
192.255.221.90	A	youmint.in
192.255.221.90	A	track.youmint.com
192.255.221.92	PTR	4028-language.biglimons.com
192.255.221.92	A	modeamoi.com
192.255.221.98	PTR	mx01.curiouslamb.net
192.255.221.98	A	ns1.prayerartist.com
192.255.221.98	A	ns1.starbought.com
192.255.221.99	A	ns2.addnatural.com
192.255.221.99	A	ns2.prayerartist.com
192.255.221.99	A	ns2.advancedseek.com
192.255.221.132	PTR	vm2.crbassoconsultoria.com.br
192.255.221.194	A	golfpolls.com
192.255.221.226	PTR	client-192-255-221-226.hostwindsdns.com
192.255.221.226	A	mx221-226.sodiona.com.br
192.255.221.226	A	mail.sodiona.com.br