Robtex

Up: 68.15.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 68.15.172.0/23
Down right: 68.15.174.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.15.172.4	PTR	wsip-68-15-172-4.no.no.cox.net
68.15.172.4	A	*.randyrodgersrecruiting.com
68.15.172.4	A	simpsonstores.com
68.15.172.5	PTR	wsip-68-15-172-5.no.no.cox.net
68.15.172.7	PTR	wsip-68-15-172-7.no.no.cox.net
68.15.172.13	PTR	strategiccomp.com
68.15.172.40	A+PTR	wsip-68-15-172-40.no.no.cox.net
68.15.172.70	PTR	wsip-68-15-172-70.no.no.cox.net
68.15.172.70	A	mail.vitaloil.net
68.15.172.70	A	theresaproperties.com
68.15.172.74	A	mail.lundinroof.com
68.15.172.84	A	smtp.amerasealusa.com
68.15.172.99	A+PTR	wsip-68-15-172-99.no.no.cox.net
68.15.172.101	A+PTR	wsip-68-15-172-101.no.no.cox.net
68.15.172.158	A+PTR	wsip-68-15-172-158.no.no.cox.net
68.15.172.159	A+PTR	wsip-68-15-172-159.no.no.cox.net
68.15.172.161	A+PTR	wsip-68-15-172-161.no.no.cox.net
68.15.172.166	A+PTR	wsip-68-15-172-166.no.no.cox.net
68.15.172.168	PTR	wsip-68-15-172-168.no.no.cox.net
68.15.172.168	A	mail.ascensioncatholic.org
68.15.172.180	A	remote.bourginsurance.com
68.15.172.188	A	reddymedicalclinic.com
68.15.172.207	A+PTR	wsip-68-15-172-207.no.no.cox.net
68.15.172.208	A+PTR	wsip-68-15-172-208.no.no.cox.net
68.15.172.209	A+PTR	wsip-68-15-172-209.no.no.cox.net
68.15.172.209	A	mail.nahose.com
68.15.172.220	A+PTR	wsip-68-15-172-220.no.no.cox.net
68.15.172.224	A+PTR	wsip-68-15-172-224.no.no.cox.net
68.15.172.246	A+PTR	wsip-68-15-172-246.no.no.cox.net
68.15.173.35	A	mail.trinityschoolbr.org
68.15.173.39	A	eastlakeshore.com
68.15.173.39	A	longllc.com
68.15.173.81	A	mail.piaoflouisiana.com
68.15.173.87	PTR	wsip-68-15-173-87.no.no.cox.net
68.15.173.87	A	deanmckee.com
68.15.173.87	A	exchange.fox-nesbit.com
68.15.173.202	A	materdolorosaindependence.com
68.15.173.206	A+PTR	wsip-68-15-173-206.no.no.cox.net
68.15.173.206	A	barracuda.reliableproduction.com
68.15.173.206	A	antispam.brprimarycare.org
68.15.173.248	A	*.ces-sses.com
68.15.173.248	A	ns1.ces-sses.com
68.15.173.248	A	ns2.ces-sses.com
68.15.174.28	A+PTR	wsip-68-15-174-28.no.no.cox.net
68.15.174.31	A+PTR	wsip-68-15-174-31.no.no.cox.net
68.15.174.35	A+PTR	wsip-68-15-174-35.no.no.cox.net
68.15.174.40	PTR	mail.providenceeng.com
68.15.174.40	A	dispersionmodeling.com
68.15.174.42	PTR	mail.franklinindustries.net
68.15.174.44	A+PTR	wsip-68-15-174-44.no.no.cox.net
68.15.174.46	A+PTR	wsip-68-15-174-46.no.no.cox.net
68.15.174.61	PTR	mail.lockemeredith.com
68.15.174.61	A	mail.meredithlocal.com
68.15.174.66	A+PTR	wsip-68-15-174-66.no.no.cox.net
68.15.174.68	A+PTR	wsip-68-15-174-68.no.no.cox.net
68.15.174.70	A+PTR	wsip-68-15-174-70.no.no.cox.net
68.15.174.71	A+PTR	wsip-68-15-174-71.no.no.cox.net
68.15.174.79	PTR	answerquick.cc
68.15.174.81	A+PTR	wsip-68-15-174-81.no.no.cox.net
68.15.174.85	A+PTR	wsip-68-15-174-85.no.no.cox.net
68.15.174.92	A+PTR	wsip-68-15-174-92.no.no.cox.net
68.15.174.93	PTR	wsip-68-15-174-93.no.no.cox.net
68.15.174.98	PTR	mail.ablmanagement.com
68.15.174.100	A+PTR	wsip-68-15-174-100.no.no.cox.net
68.15.174.106	A+PTR	wsip-68-15-174-106.no.no.cox.net
68.15.174.121	A	remote.computermnt.com
68.15.174.124	A+PTR	wsip-68-15-174-124.no.no.cox.net
68.15.174.135	A+PTR	mail.johnllowery.com
68.15.174.135	A	mail.lotel.com
68.15.174.144	A+PTR	wsip-68-15-174-144.no.no.cox.net
68.15.174.175	A+PTR	wsip-68-15-174-175.no.no.cox.net
68.15.174.176	A+PTR	wsip-68-15-174-176.no.no.cox.net
68.15.174.179	A+PTR	wsip-68-15-174-179.no.no.cox.net
68.15.174.194	A+PTR	wsip-68-15-174-194.no.no.cox.net
68.15.174.197	A+PTR	wsip-68-15-174-197.no.no.cox.net
68.15.174.206	A+PTR	wsip-68-15-174-206.no.no.cox.net
68.15.174.222	A+PTR	wsip-68-15-174-222.no.no.cox.net
68.15.174.230	A+PTR	wsip-68-15-174-230.no.no.cox.net
68.15.174.231	A+PTR	wsip-68-15-174-231.no.no.cox.net
68.15.174.234	PTR	issla.com
68.15.174.237	A+PTR	wsip-68-15-174-237.no.no.cox.net
68.15.174.246	A+PTR	wsip-68-15-174-246.no.no.cox.net
68.15.174.250	A+PTR	wsip-68-15-174-250.no.no.cox.net
68.15.175.10	A+PTR	wsip-68-15-175-10.no.no.cox.net
68.15.175.84	A	support.macconsultinggroup.com
68.15.175.84	A	hosting.mcghosting.com
68.15.175.84	A	mcghosting.com
68.15.175.99	A	mail.shoenfeltlaw.com
68.15.175.119	PTR	mail.lsrsugar.com
68.15.175.119	A	remote.lsrsugar.com
68.15.175.119	A	wsip-68-15-175-119.no.no.cox.net
68.15.175.204	A	office.teamserco.com
68.15.175.212	A+PTR	wsip-68-15-175-212.no.no.cox.net
68.15.175.255	PTR	wsip-68-15-175-255.no.no.cox.net