Robtex

Up: 38.65.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 38.65.196.0/23
Down right: 38.65.198.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
38.65.196.42	PTR	sgcmail.com
38.65.196.42	A	*.sgcmail.com
38.65.196.62	PTR	mail.afterschoolclub.com
38.65.196.99	A+PTR	mail.grobartlawfirm.com
38.65.196.141	A	mail.ebmclean.com
38.65.196.147	A+PTR	remote.arnoldandkadjan.com
38.65.196.250	A	mail.lungchicago.org
38.65.196.252	A	mail.lungchicago.org
38.65.197.3	A	shcmail.schoolhealth.com
38.65.197.3	A	smtp2.esportshealth.com
38.65.197.3	A	smtp2.healthgiant.com
38.65.197.98	A	vpn.suburbansurgicalcare.com
38.65.197.130	A	*.lakeviewim.com
38.65.197.130	A	lakeviewim.com
38.65.197.130	A	mail.lakeviewim.com
38.65.197.178	PTR	danamolded.com
38.65.197.178	A	janbar.com
38.65.197.178	A	*.janbar.com
38.65.197.180	A	mail2.ourchildrenshomestead.org
38.65.197.235	PTR	graphitestore.com
38.65.197.235	A	hottemperature.com
38.65.197.235	A	corrosionstore.com
38.65.197.250	A	mail.a-telcom.com
38.65.197.251	A	lensman.org
38.65.198.130	A	meyersteeldrum.com
38.65.199.35	A	mail.goldenapple.org
38.65.199.37	A	apple2.goldenapple.org
38.65.199.75	A	mail.jfklegal.com
38.65.199.75	A	remote.jfklegal.com
38.65.199.146	PTR	mail2.redwoodsystemsgroup.com
38.65.199.147	PTR	mail.redwoodsystemsgroup.com
38.65.199.162	A	mail.jamonstage.com
38.65.199.162	A	mail.grandslamprod.com
38.65.199.162	A	mail.jamtheatricals.com
38.65.199.198	PTR	ngw.atgfreight.com
38.65.199.209	A	ns1.atgfreight.com
38.65.199.211	A	barracuda.atgfreight.com
38.65.199.212	A	sync.atgfreight.com
38.65.199.213	A	ftp.atgfreight.com
38.65.199.214	PTR	host214.atgfreight.com
38.65.199.218	PTR	host218.atgfreight.com
38.65.199.218	A	atgfreight.com
38.65.199.219	PTR	host219.atgfreight.com
38.65.199.244	A	mail2.primestaffing.com