Robtex

Up: 208.58.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 208.58.16.0/22
Down right: 208.58.20.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.58.16.10	A+PTR	westongroupinc.com
208.58.16.10	A	mail.triadmedicalsupplyinc.com
208.58.16.10	A	mail.mobilityrehab.com
208.58.16.11	PTR	mail.westongroupinc.com
208.58.16.85	A	lhveyeallentown06.l.subnet.rcn.com
208.58.16.90	PTR	lhvsafetysupply03.l.subnet.rcn.net
208.58.16.90	A	mail.faxdocuments41.ml
208.58.16.90	A	faxdocuments41.ml
208.58.16.154	A	mail.hillsideschool.org
208.58.16.178	A+PTR	cartwellips03.c.subnet.rcn.com
208.58.16.194	PTR	exscribeips03.e.subnet.rcn.com
208.58.16.194	A	mail.exscribe.com
208.58.16.203	A	myrccs.com
208.58.16.203	A	www.myrccs.com
208.58.16.214	A	apple.acchs.info
208.58.16.249	A	bvi916.aggr2.atw.pa.rcn.net
208.58.18.9	PTR	208-58-18-9.pa.subnet.cable.rcn.com
208.58.18.9	A	bdl1.eas-cbr2.atw-eas.pa.cable.rcn.net
208.58.18.9	A	bdl1.eas-ubr2.atw-eas.pa.cable.rcn.net
208.58.18.41	PTR	208-58-18-41.pa.subnet.cable.rcncustomer.com
208.58.18.41	A	bdl1.eas-ubr2.atw-eas.pa.cable.rcn.net
208.58.18.50	A	mail.catalystintl.com
208.58.18.57	PTR	208-58-18-57.pa.subnet.cable.rcn.com
208.58.18.57	A	bdl1.drf-ubr1.atw-drf.pa.cable.rcn.net
208.58.18.60	A	mail.payroll.bibbystaffingfinance.com
208.58.18.60	A	mail.demo.bibbystaffingfinance.com
208.58.18.60	A	mail.wbpsi.com
208.58.18.65	PTR	208-58-18-65.pa.subnet.cable.rcn.com
208.58.18.65	A	bdl1.drf-ubr1.atw-drf.pa.cable.rcn.net
208.58.18.65	A	bdl1.atw-cbr2.atw.pa.cable.rcn.net
208.58.18.73	PTR	208-58-18-73.pa.subnet.cable.rcn.com
208.58.18.73	A	bdl1.atw-cbr1.atw.pa.cable.rcn.net
208.58.18.97	PTR	208-58-18-97.pa.subnet.cable.rcn.com
208.58.18.97	A	bdl1.atw-cbr1.atw.pa.cable.rcn.net
208.58.18.114	A	mail.plantique.com
208.58.18.121	A	bdl1.eas-cbr2.atw-eas.pa.cable.rcn.net
208.58.18.129	A	bdl1.eas-cbr2.atw-eas.pa.cable.rcn.net
208.58.18.145	PTR	208-58-18-145.pa.subnet.cable.rcn.com
208.58.18.145	A	bdl1.smt-ubr1.atw-smt.pa.cable.rcn.net
208.58.18.153	PTR	208-58-18-153.pa.subnet.cable.rcn.com
208.58.18.153	A	bdl1.atw-cbr2.atw.pa.cable.rcn.net
208.58.18.153	A	bdl1.atw-cbr1.atw.pa.cable.rcn.net
208.58.18.177	PTR	208-58-18-177.pa.subnet.cable.rcn.com
208.58.18.177	A	bdl1.tlg-cbr3.atw-tlg.pa.cable.rcn.net
208.58.18.193	PTR	208-58-18-193.pa.subnet.cable.rcncustomer.com
208.58.18.193	A	bdl1.eas-ubr1.atw-eas.pa.cable.rcn.net
208.58.18.198	A	remote.eastonems.net
208.58.18.209	PTR	208-58-18-209.pa.subnet.cable.rcn.com
208.58.18.209	A	bdl1.atw-cbr1.atw.pa.cable.rcn.net
208.58.18.211	PTR	208-58-18-211.pa.subnet.cable.rcncustomer.com
208.58.18.211	A	phlinf-mx01.infradapt.net
208.58.18.211	A	phlinf-mx01.infradapt.com
208.58.18.226	A+PTR	mail.eisenhardtmills.com
208.58.18.226	A	remote.eisenhardtmills.com
208.58.18.226	A	firewall.eisenhardtmills.com
208.58.18.233	PTR	208-58-18-233.pa.subnet.cable.rcn.com
208.58.18.233	A	bdl1.eas-ubr1.atw-eas.pa.cable.rcn.net
208.58.18.241	PTR	208-58-18-241.pa.subnet.cable.rcn.com
208.58.18.241	A	bdl1.eas-cbr2.atw-eas.pa.cable.rcn.net
208.58.18.241	A	bdl1.eas-ubr2.atw-eas.pa.cable.rcn.net
208.58.18.249	PTR	208-58-18-249.pa.subnet.cable.rcncustomer.com
208.58.18.249	A	bdl1.eas-cbr2.atw-eas.pa.cable.rcn.net
208.58.19.2	A	justbornips03.j.subnet.rcn.com
208.58.19.79	PTR	lnaaips16.l.subnet.rcn.com
208.58.19.79	A	lnaa.com
208.58.19.79	A	host140.lnaa.com
208.58.19.83	A	www.lnaa.com
208.58.19.110	A+PTR	mail.lnaa.com
208.58.19.110	A	email.lnaa.com
208.58.19.115	A+PTR	lnaaips52.l.subnet.rcn.com
208.58.19.221	A+PTR	flsmidthips30.f.subnet.rcn.com
208.58.20.58	A	mail.lowermac.com
208.58.20.82	A	mail.hanovertwp-nc.org
208.58.20.172	A	mail.gow-mac.com
208.58.20.202	A+PTR	moravianemarket03.m.subnet.rcn.com
208.58.21.118	A+PTR	ofcquartersips23.o.subnet.rcn.com
208.58.21.119	A+PTR	ofcquartersips24.o.subnet.rcn.com
208.58.21.119	A	mail.microinnovation.net
208.58.21.122	PTR	ofcquartersips27.o.subnet.rcn.com
208.58.21.122	A	uskeystonesales.com
208.58.21.122	A	www.sportscenterusa.net
208.58.21.130	A+PTR	easdips1gb03.e.subnet.rcn.com
208.58.21.138	PTR	asgcosips11.a.subnet.rcn.com
208.58.21.138	A	fm.eastonsd.org
208.58.21.142	A	destiny.eastonsd.org
208.58.21.148	A	mg.eastonsd.org
208.58.21.163	A	mail2.icscarwashsystems.com
208.58.23.10	PTR	host10.guardian.ins.g.subnet.rcn.com
208.58.23.49	A+PTR	gw1.darkwing.net
208.58.23.52	A	kitty.darkwing.net
208.58.23.54	A	dhcp02.darkwing.net
208.58.23.55	A	dhcp03.darkwing.net
208.58.23.58	A	dhcp06.darkwing.net
208.58.23.59	A	dhcp07.darkwing.net
208.58.23.61	A	dhcp09.darkwing.net
208.58.23.146	A	twpny.com