Robtex

Up: 199.30.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 199.30.56.0/23
Down right: 199.30.58.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.30.56.7	A	fpblox.com
199.30.56.12	A+PTR	mailgw-b.fpimx.com
199.30.56.12	A	spam2.fpinet.net
199.30.56.15	PTR	admin.cloudmyoffice.com
199.30.56.15	A	vmstormvps.com
199.30.56.15	A	www.vmstormvps.com
199.30.56.16	A+PTR	mailgw-a.fpimx.com
199.30.56.16	A	spam3.fpinet.net
199.30.56.16	A	spam1.fpinet.net
199.30.56.19	A	cloudmyministry.com
199.30.56.35	A	spam1.dh.fpinet.net
199.30.56.39	A	cloudvpspanel.com
199.30.56.57	A	billing.goflashpoint.com
199.30.56.118	A	managemypassword.com
199.30.56.155	A	mail.quadnetics.com
199.30.56.162	A	mail.1catdog.com
199.30.56.162	A	admin.cloudmyoffice.com
199.30.56.162	A	var20000-desktop.cloudmyoffice.com
199.30.56.173	A	desktop.it365cloud.com
199.30.56.173	A	var-21138.cloudmyoffice.com
199.30.56.194	A+PTR	gvgw1.simonics.com
199.30.56.198	A+PTR	gvfax1.simonics.com
199.30.56.199	A	gvgw2.simonics.com
199.30.57.14	PTR	fpi-dns-a.sc.fpinet.net
199.30.57.14	A	dns-a.fpinet.net
199.30.57.68	PTR	ns68.asquaush.info
199.30.57.68	A	familieslikeours.org
199.30.57.86	PTR	mm.mm-mailer.com
199.30.57.86	A	mail.mm-mailer.com
199.30.57.86	A	mm-mailer.com
199.30.57.117	PTR	crone.us
199.30.57.120	PTR	buddyfusion.com
199.30.57.120	A	devph.com
199.30.57.120	A	www.devph.com
199.30.57.124	PTR	srv.n3t.in
199.30.57.130	PTR	ministud.io
199.30.57.157	A	mail.mail3.us1.krfzwv.net
199.30.57.157	A	mail3.us1.krfzwv.net
199.30.57.225	A	www.bellefonte.net
199.30.57.228	A	ymcaocc.org
199.30.57.228	A	www.ymcaofcentrecounty.org
199.30.57.242	PTR	fe-1.highexistence.com
199.30.58.57	PTR	chelcey.4195tech.com
199.30.58.58	PTR	server2.server.com
199.30.58.66	A	cpanel-1.fpinet.net
199.30.58.66	A	cpanel-2.fpinet.net
199.30.58.66	A	erdley.co
199.30.58.74	PTR	www.poste.it
199.30.58.93	A	ns2.shiftelectronics.com
199.30.58.93	A	achieveworkshops.com
199.30.58.109	PTR	srv.n3t.in
199.30.58.126	A	mail.lightrailmarketing.com
199.30.58.126	A	lrlearn.com
199.30.58.126	A	lightrailmarketing.com
199.30.58.146	A	mail.h2os.net
199.30.58.157	A	ccios.net
199.30.58.157	A	mx.ccios.net
199.30.58.170	PTR	mgmt
199.30.58.187	PTR	ns2.kleversoft.net
199.30.58.221	A	rallyparicutinbmw.com
199.30.58.221	A	bmwuruapan.com
199.30.58.223	A	voipessential.net
199.30.58.223	A	www.voipessential.com
199.30.58.233	PTR	thecherokeeconnection.com
199.30.58.237	A	newsmakergroup.com
199.30.58.243	PTR	vursol.com
199.30.59.8	A	ast.baravoip.com
199.30.59.9	A	dialadevotion.org
199.30.59.9	A	avaoc.org
199.30.59.11	PTR	mail.xuridisa.com
199.30.59.17	A+PTR	michaeldacre.com
199.30.59.17	A	wonkybugger.com
199.30.59.19	PTR	host.giang.us
199.30.59.33	PTR	host.giang.us
199.30.59.35	A	zetta.elopez.com.ar
199.30.59.37	PTR	host.giang.us
199.30.59.40	A	server1.asiaiphub.com
199.30.59.53	A	codebooksupport.com
199.30.59.58	A	akber.net
199.30.59.62	A	screlay.cloudmyoffice.com
199.30.59.80	PTR	db-1.qx.twivio.com
199.30.59.80	A	scienceparkpool.com
199.30.59.80	A	a.dns.fpinet.net
199.30.59.82	PTR	sip2.voipmuch.com
199.30.59.86	A	www.fpinet.net
199.30.59.86	A	fpblocks.com
199.30.59.86	A	fpi2.com
199.30.59.109	A	guiltygroups.com
199.30.59.161	A	svstorm-dns.dns-wk.info
199.30.59.166	A	sowee.ca
199.30.59.168	A	davidlaura.com
199.30.59.177	PTR	andyit.org.uk
199.30.59.185	PTR	anime.cl
199.30.59.185	A	root.anime.cl
199.30.59.185	A	rmtest.me
199.30.59.210	A	flowtowork.com
199.30.59.231	A	ns2.insertdatahere.net
199.30.59.242	A	scientific35.com
199.30.59.242	A	mail.scientific35.com