Robtex

Up: 199.7.68.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 199.7.68.0/25
Down right: 199.7.68.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
199.7.68.1	A+PTR	pdns3.ultradns.org
199.7.68.1	A	ns2.meredith.com
199.7.68.1	A	topaxnetp003.iss.bnr.com
199.7.68.137	PTR	pdnswhatever.ultradns.org
199.7.68.228	A+PTR	ns3.tevapharm.com
199.7.68.230	A+PTR	ns1.rd.com
199.7.68.232	A+PTR	dns3.myspace.com
199.7.68.234	A+PTR	dns03.bis-internet.co.uk
199.7.68.235	A+PTR	dns03.salesforce.com
199.7.68.236	PTR	ns3.visionsurveysolnet.com
199.7.68.238	A+PTR	ns3.timewarner.net
199.7.68.239	A+PTR	ns3.safenames.net
199.7.68.240	A+PTR	ha3.markmonitordns.com
199.7.68.241	PTR	dns03.name.com
199.7.68.242	A+PTR	ns3.colormaria.net
199.7.68.243	PTR	spdns3.cscdns.net
199.7.68.243	PTR	pdns3.ultradns.org
199.7.68.244	A+PTR	ns5.demysdns.co.uk
199.7.68.245	PTR	pdns3.ultradns.org
199.7.68.245	A	ns03.jackalopepubs.com
199.7.68.245	A	ns03.x-bizzare.com
199.7.68.246	PTR	dns01.ebrandsecure.net
199.7.68.246	A	srv1-alcoa.ma
199.7.68.247	A+PTR	ns3.bancinternetgroup.com
199.7.68.247	A	ns3.profitstars.bank
199.7.68.248	PTR	dns3.melbourneitcbs.net
199.7.68.248	A	dns13.domainnetwork.com
199.7.68.249	PTR	ns3.diginsite.com
199.7.68.250	PTR	ns3.oursupport.net
199.7.68.251	PTR	pdns3.ultradns.org
199.7.68.252	A+PTR	dns03.omniture.com
199.7.68.252	A	ns203.adobe.net
199.7.68.252	A	ns303.adobe.net
199.7.68.253	PTR	ns5.netnames.net
199.7.68.253	A	srv2-koodza.ma
199.7.68.253	A	srv2-novadry.ma
199.7.68.254	A+PTR	ns03.tsysas.net