Robtex

Up: 204.15.128.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 204.15.136.0/22
Down right: 204.15.140.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.15.136.0	PTR	vacant.power1.com
204.15.136.2	A+PTR	ns1.power1.com
204.15.136.2	A	ns1.poweroneinternet.com
204.15.136.3	A+PTR	ns2.power1.com
204.15.136.3	A	ns2.poweroneinternet.com
204.15.136.8	A+PTR	p1-lk-sip1.power1.com
204.15.136.9	A	p1-lk-sw0.power1.com
204.15.136.10	PTR	p1-lk-nt1.power1.com
204.15.136.10	A	theatmcompany.net
204.15.136.10	A	americaoneinc.com
204.15.136.16	PTR	vacant.power1.com
204.15.136.16	A	mail.runwaymagazine.ca
204.15.136.16	A	runwaymagazine.ca
204.15.136.17	PTR	p1-lk-netmon.power1.com
204.15.136.17	A	mail.myhosteddomain.com
204.15.136.19	A+PTR	p1-lk-mxfilter.power1.com
204.15.136.24	A+PTR	testrh.power1.com
204.15.136.25	A	p1-lk-tp100.power1.com
204.15.136.26	A+PTR	p1-lk-tpsms.power1.com
204.15.136.26	A	p1-lk-mxfilter.power1.com
204.15.136.32	A+PTR	lk-storage.power1.com
204.15.136.32	A	p1-lk-netmon.power1.com
204.15.136.38	A	zuwcrew.com
204.15.136.38	A	mail.zuwharrie.com
204.15.136.40	PTR	helium.myhosteddomain.com
204.15.136.40	A	stepsrampsrails.com
204.15.136.40	A	carrnetwork.net
204.15.136.41	PTR	helium.myhosteddomain.com
204.15.136.41	PTR	vacant.power1.com
204.15.136.42	PTR	helium.myhosteddomain.com
204.15.136.43	PTR	vacant.power1.com
204.15.136.50	PTR	vacant.power1.com
204.15.136.50	A	osmium.power1.net
204.15.136.50	A	mail.p1cloud.net
204.15.136.58	PTR	vacant.power1.com
204.15.136.64	PTR	vacant.power1.com
204.15.136.67	PTR	vacant.power1.com
204.15.136.89	PTR	vacant.power1.com
204.15.136.90	PTR	vacant.power1.com
204.15.136.98	PTR	vacant.power1.com
204.15.136.99	PTR	vacant.power1.com
204.15.136.114	A+PTR	lsbg1-ups.airpowered.com
204.15.136.114	A	air-lsbg1-ups.power1.com
204.15.136.115	A	lsbg1-nps.airpowered.com
204.15.136.115	A	air-lsbg1-nps.power1.com
204.15.136.122	A+PTR	tav1-ups.airpowered.com
204.15.136.122	A	air-tav1-ups.power1.com
204.15.136.123	A	air-tav1-nps.power1.com
204.15.136.128	PTR	s30-specialized.airpowered.com
204.15.136.141	A	p1-lk-gw0.power1.com
204.15.136.152	PTR	vacant.power1.com
204.15.136.154	PTR	tav1-3550-lk-gw0.airpowered.com
204.15.136.160	PTR	vacant.power1.com
204.15.136.184	PTR	vacant.power1.com
204.15.136.208	PTR	mail2.cfhalliance.net
204.15.137.8	PTR	specialized-unused.power1.com
204.15.137.35	PTR	nickel.myhosteddomain.com
204.15.137.35	PTR	lk-hyperv-1-35.power1.com
204.15.137.35	A	mail.aussieeggshellcarvers.com
204.15.137.50	A	tigerpaw.wtecmss.com
204.15.137.66	PTR	ns1.acmecargo.com
204.15.137.66	A	thebreastday.com
204.15.137.66	A	pokeydokey.com
204.15.137.68	A	mx.routergy.com
204.15.137.82	A	office.cresserv.com
204.15.137.83	PTR	brockie-international-s29.power1.com
204.15.137.83	A	office.accu-cut.com
204.15.137.90	A	mail.watermanvillage.com
204.15.137.115	PTR	vacant.power1.com
204.15.137.121	PTR	vacant.power1.com
204.15.137.132	A	mail-alt1.iabsc.org
204.15.137.138	PTR	mail.cnowinc.com
204.15.137.139	PTR	cnow-s29.power1.com
204.15.137.140	A	mail2.431corp.com
204.15.137.140	A	mail2.celestefoundation.org
204.15.137.140	A	mail2.jpdonnelly.com
204.15.137.178	PTR	mail.westorangelumber.com
204.15.137.184	PTR	vacant.power1.com
204.15.137.200	PTR	vacant.power1.com
204.15.137.203	PTR	vacant.power1.com
204.15.137.232	PTR	vacant.power1.com
204.15.137.243	PTR	vacant.power1.com
204.15.138.56	PTR	204-15-138-56-no-auth.airpowered.com
204.15.138.56	A	mail1.431corp.com
204.15.138.56	A	mail1.celestefoundation.org
204.15.138.73	PTR	ace-staffing.airpowered.com
204.15.138.88	A	mail.tavaresvillage.com
204.15.139.0	PTR	204-15-139-0-no-auth.airpowered.com
204.15.139.27	PTR	204-15-139-27-no-auth.airpowered.com
204.15.139.32	PTR	204-15-139-32-no-auth.airpowered.com
204.15.139.42	PTR	204-15-139-42-no-auth.airpowered.com
204.15.139.48	PTR	204-15-139-48-no-auth.airpowered.com
204.15.139.49	PTR	204-15-139-49-no-auth.airpowered.com
204.15.139.59	PTR	cco-400ph.airpowered.com
204.15.139.65	PTR	air-orl-lee-3550-fe03.airpowered.com
204.15.139.72	PTR	204-15-139-72-no-auth.airpowered.com
204.15.139.74	PTR	204-15-139-74-no-auth.airpowered.com
204.15.139.80	PTR	204-15-139-80-no-auth.airpowered.com
204.15.139.89	PTR	eurografix.airpowered.com
204.15.139.91	PTR	lakeside-behavioral-kdy.airpowered.com
204.15.139.137	PTR	204-15-139-137-no-auth.airpowered.com
204.15.139.145	PTR	204-15-139-145-no-auth.airpowered.com
204.15.139.155	PTR	204-15-139-155-no-auth.airpowered.com
204.15.139.161	PTR	204-15-139-161-no-auth.airpowered.com
204.15.139.168	PTR	204-15-139-168-no-auth.airpowered.com
204.15.139.169	PTR	204-15-139-169-no-auth.airpowered.com
204.15.139.185	PTR	204-15-139-185-no-auth.airpowered.com
204.15.139.186	PTR	204-15-139-186-no-auth.airpowered.com
204.15.139.187	PTR	204-15-139-187-no-auth.airpowered.com
204.15.139.192	PTR	diocesian-publishing-net.airpowered.com
204.15.139.194	PTR	diocesian-publishing-194.airpowered.com
204.15.139.194	A	mail3.diocesanfl.com
204.15.139.201	PTR	204-15-139-201-no-auth.airpowered.com
204.15.139.203	PTR	204-15-139-203-no-auth.airpowered.com
204.15.139.217	PTR	204-15-139-217-no-auth.airpowered.com
204.15.139.243	PTR	orl-lee-nps2-bc.airpowered.com
204.15.139.249	PTR	orl-lee-ups-gw.airpowered.com
204.15.139.250	A	orl-lee-ups.airpowered.com
204.15.139.250	A	air-orl-lee-ups.power1.com
204.15.139.254	A	orl-lee-nps1.airpowered.com
204.15.139.254	A	air-orl-lee-nps.power1.com
204.15.140.0	PTR	vacant.power1.com
204.15.140.1	A+PTR	p1-orl-3550.power1.com
204.15.140.2	PTR	ns3.power1.com
204.15.140.4	A	p1i.net
204.15.140.4	A	www.powerwind.com
204.15.140.4	A	907webster.com
204.15.140.8	PTR	mail.power1.com
204.15.140.9	A	p1-orl-sw1.power1.com
204.15.140.12	A	backup.power1.com
204.15.140.13	A	actinc1.com
204.15.140.13	A	sunstatelogistics.com
204.15.140.18	A	p1-orl-msa1.power1.com
204.15.140.19	A+PTR	p1-orl-mxfilter.power1.com
204.15.140.21	A	p1-orl-ne.power1.com
204.15.140.25	A	p1-orl-rad1.power1.com
204.15.140.25	A	p1-orl-tp50.power1.com
204.15.140.26	A	p1-orl-kvm1.power1.com
204.15.140.27	A+PTR	p1-orl-kvm2.power1.com
204.15.140.51	A	smtp-mx.power1.com
204.15.140.99	PTR	vacant.power1.com
204.15.140.104	PTR	vacant.power1.com
204.15.140.107	PTR	vacant.power1.com
204.15.140.113	PTR	vacant.power1.com
204.15.140.114	A	air-orl-st-ups.power1.com
204.15.140.115	A	air-orl-st-nps.power1.com
204.15.140.128	PTR	vacant.power1.com
204.15.140.131	PTR	vacant.power1.com
204.15.140.139	PTR	vacant.power1.com
204.15.140.162	PTR	wg1-ph1.airpowered.com
204.15.140.169	PTR	orl-st-edbd-18.airpowered.com
204.15.140.177	PTR	orl-lee-ph1.airpowered.com
204.15.140.202	PTR	vacant.power1.com
204.15.140.235	PTR	vacant.power1.com
204.15.140.242	PTR	vacant.power1.com
204.15.140.243	PTR	vacant.power1.com
204.15.140.248	PTR	orl-st-orl-sobt-bh-net.airpowered.com
204.15.141.146	PTR	mail.atexac.com
204.15.141.203	PTR	vacant.power1.com
204.15.141.235	PTR	vacant.power1.com
204.15.142.0	PTR	acmecargo.com
204.15.142.2	PTR	cockroachespests.com
204.15.142.44	A	www.lasdefense.com
204.15.142.44	A	lasdefense.com
204.15.142.52	PTR	eurografix.com
204.15.142.98	PTR	vacant.power1.com
204.15.142.98	A	rebutan.net
204.15.142.98	A	neochinsc.com
204.15.142.100	A	hostmaster.stries.net
204.15.142.100	A	mx1.stries.net
204.15.142.106	A	ns2.thismek.net
204.15.142.106	A	ns2.paranutri.net
204.15.142.107	PTR	mysob.net
204.15.142.107	A	ns1.thismek.net
204.15.142.195	PTR	vacant.power1.com
204.15.142.234	PTR	vacant.power1.com
204.15.142.251	PTR	vacant.power1.com
204.15.143.52	A	mail.acestaffingunlimited.com
204.15.143.144	PTR	mail2.cfhalliance.net
204.15.143.169	PTR	lrmc-169-static.power1.com
204.15.143.217	PTR	vacant.power1.com
204.15.143.219	PTR	vacant.power1.com
204.15.143.227	PTR	vacant.power1.com