Robtex

Up: 67.53.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 67.53.80.0/23
Down right: 67.53.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
67.53.80.42	PTR	rrcs-67-53-80-42.west.biz.rr.com
67.53.80.42	A	mail.mmymca.org
67.53.80.123	PTR	rrcs-67-53-80-123.west.biz.rr.com
67.53.80.123	A	mail.handleitinc.com
67.53.80.123	A	mail.miiequipment.com
67.53.80.140	PTR	rrcs-67-53-80-140.west.biz.rr.com
67.53.80.163	PTR	rrcs-67-53-80-163.west.biz.rr.com
67.53.80.163	A	remote.rozgacorp.com
67.53.80.242	A	fromletterstowords.com
67.53.81.18	A+PTR	mail.breuckman.com
67.53.81.20	A+PTR	smtp.breuckman.com
67.53.81.20	A	stripeymaney.com
67.53.81.20	A	www.stripeymaney.com
67.53.81.21	PTR	rrcs-67-53-81-21.west.biz.rr.com
67.53.81.46	PTR	rrcs-67-53-81-46.west.biz.rr.com
67.53.81.46	A	mail.a2zplanning.com
67.53.81.46	A	a2zplanning.com
67.53.81.58	A	mail.conradschmitt.com
67.53.81.74	A	mail.mtiwi.com
67.53.81.78	A+PTR	rrcs-67-53-81-78.west.biz.rr.com
67.53.81.154	A	mail.amenitydentalcare.com
67.53.81.170	PTR	rrcs-67-53-81-170.west.biz.rr.com
67.53.81.179	PTR	rrcs-67-53-81-179.west.biz.rr.com
67.53.81.179	A	exchange.seal-us.com
67.53.81.254	A+PTR	rrcs-67-53-81-254.west.biz.rr.com
67.53.82.2	A	webmail.rch-com.com
67.53.82.7	A+PTR	rrcs-67-53-82-7.west.biz.rr.com
67.53.82.26	A	mail.idlsi.com
67.53.82.50	PTR	rrcs-67-53-82-50.west.biz.rr.com
67.53.82.50	A	mail.collegekids.com
67.53.82.226	PTR	rrcs-67-53-82-226.west.biz.rr.com
67.53.82.226	A	peacecitizen.org
67.53.82.226	A	aifdsc.com
67.53.82.238	A+PTR	rrcs-67-53-82-238.west.biz.rr.com
67.53.83.4	PTR	rrcs-67-53-83-4.west.biz.rr.com
67.53.83.19	A+PTR	rrcs-67-53-83-19.west.biz.rr.com
67.53.83.227	PTR	rrcs-67-53-83-227.west.biz.rr.com
67.53.83.227	A	hitekequip.org
67.53.83.227	A	hitekequip.net
67.53.83.228	A	hitekequipment.org
67.53.83.229	A	wightmanfamily.net
67.53.83.251	A+PTR	rrcs-67-53-83-251.west.biz.rr.com
67.53.83.251	A	cplii.com