Robtex

Up: 207.7.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 207.7.100.0/23
Down right: 207.7.102.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
207.7.100.7	PTR	207-7-100-7.sd.nextlevelinternet.com
207.7.100.15	PTR	207-7-100-15.sd.nextlevelinternet.com
207.7.100.16	PTR	207-7-100-16.sd.nextlevelinternet.com
207.7.100.18	A+PTR	tacacs01.nextlevelinternet.com
207.7.100.19	A	wug.nextlevelinternet.com
207.7.100.20	A+PTR	spool.nextlevelinternet.com
207.7.100.20	A	mail.nextlevelinternet.com
207.7.100.22	PTR	pigeon.nextlevelinternet.com
207.7.100.23	A	mrtg.nextlevelinternet.com
207.7.100.23	A	homir.nextlevelinternet.com
207.7.100.25	A+PTR	smtp.nextlevelinternet.com
207.7.100.30	A	pix-l3.nextlevelinternet.com
207.7.100.32	PTR	207-7-100-32.sd.nextlevelinternet.com
207.7.100.34	A+PTR	admin.nextlevelvoice.com
207.7.100.35	PTR	aw.nextlevelinternet.com
207.7.100.35	A	annaware-www.nextlevelinternet.com
207.7.100.47	PTR	207-7-100-47.sd.nextlevelinternet.com
207.7.100.48	PTR	207-7-100-48.sd.nextlevelinternet.com
207.7.100.63	PTR	207-7-100-63.sd.nextlevelinternet.com
207.7.100.64	PTR	207-7-100-64.sd.nextlevelinternet.com
207.7.100.79	PTR	207-7-100-79.sd.nextlevelinternet.com
207.7.100.95	PTR	207-7-100-95.sd.nextlevelinternet.com
207.7.100.96	PTR	207-7-100-96.sd.nextlevelinternet.com
207.7.100.99	A+PTR	auth1.nextlevelinternet.com
207.7.100.100	A+PTR	rec3.nextlevelinternet.com
207.7.100.100	A	ntp.nextlevelinternet.com
207.7.100.103	PTR	207-7-100-103.sd.nextlevelinternet.com
207.7.100.104	PTR	207-7-100-104.sd.nextlevelinternet.com
207.7.100.106	A	mail.lfstaffing.us
207.7.100.106	A	lfstaffing.us
207.7.100.106	A	mail.laborfindersaz.com
207.7.100.132	PTR	207-7-100-132.sd.nextlevelinternet.com
207.7.100.132	A	mx2.pathway.com
207.7.100.133	A+PTR	mx1.pathway.com
207.7.100.133	A	mx1.seanetworks.com
207.7.100.149	PTR	207-7-100-149.sd.nextlevelinternet.com
207.7.100.150	A+PTR	mail.mypatientclick.com
207.7.100.150	A	mail.mdlifesimple.com
207.7.100.150	A	mail.tech4genx.com
207.7.100.242	PTR	207-7-100-242.sd.nextlevelinternet.com
207.7.101.2	PTR	207-7-101-2.sd.nextlevelinternet.com
207.7.101.2	A	mybucketsofmoney.com
207.7.101.140	A	pts1.protec-alarm.com
207.7.101.162	A	mail.kitonline.org
207.7.101.162	A	kitserver.kitonline.org
207.7.101.187	A	signetek.com
207.7.101.202	PTR	exchange.jennadruck.org
207.7.101.202	A	exchange.yourbestyearever.org
207.7.101.203	A	exchange.jennadruck.org
207.7.101.203	A	exchange.jennadruckcenter.com
207.7.101.203	A	exchange.jennadruckcenter.org
207.7.102.1	A	sd-gw01.nextlevelinternet.com
207.7.102.2	A+PTR	sd-gw02.nextlevelinternet.com
207.7.102.3	A	sd-sr01.nextlevelinternet.com
207.7.102.42	A	mail.frontline-direct.com
207.7.102.52	PTR	207-7-102-52.sd.nextlevelinternet.com
207.7.102.52	A	mail.philjoseph.com
207.7.102.83	PTR	alphamse.com
207.7.102.123	PTR	207-7-102-123.sd.nextlevelinternet.com
207.7.102.123	A	shipoverseas.net
207.7.102.123	A	shipvehicleoverseas.com
207.7.102.196	PTR	dns1.ghasp.net
207.7.102.197	A+PTR	dns1.ghasp.net
207.7.102.197	A	dns2.ghasp.net
207.7.102.198	PTR	207-7-102-198.sd.nextlevelinternet.com
207.7.102.198	A	dns5.ghasp.net
207.7.102.199	A	mail.dscript.net
207.7.102.206	PTR	207-7-102-206.sd.nextlevelinternet.com
207.7.102.206	A	goldenhourdata.com
207.7.102.228	PTR	207-7-102-228.sd.nextlevelinternet.com
207.7.102.236	A	vm-exch01.systim.com
207.7.103.10	A	ns2.digitalorchid.com
207.7.103.46	PTR	207-7-103-46.sd.nextlevelinternet.com
207.7.103.46	A	digitalorchid.com
207.7.103.46	A	sorteotechnology.com
207.7.103.61	A	ns1.digitalorchid.com
207.7.103.68	PTR	wireshark.nextlevelinternet.com
207.7.103.68	A	unmatchedreliability.net
207.7.103.68	A	uritg.com
207.7.103.85	PTR	207-7-103-85.sd.nextlevelinternet.com
207.7.103.85	A	mail.sbinsolutions.com
207.7.103.118	PTR	207-7-103-118.sd.nextlevelinternet.com
207.7.103.118	A	dns3.sandicor.com
207.7.103.163	A+PTR	securemail.sovereigncloud.com
207.7.103.165	A	ex01.pacificofficeproperties.com
207.7.103.165	A	mail.shidlergroup.com
207.7.103.169	PTR	207-7-103-169.sd.nextlevelinternet.com
207.7.103.169	A	av.systim.com
207.7.103.169	A	msp.systim.com
207.7.103.178	A+PTR	mail.sovereigncloud.com
207.7.103.183	A+PTR	h4ml.thunderbirdresorts.com
207.7.103.187	PTR	207-7-103-187.sd.nextlevelinternet.com
207.7.103.187	A	remoteconnection.systim.com