Robtex

Up: 8.19.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 8.19.44.0/23
Down right: 8.19.46.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
8.19.44.23	A+PTR	ip-8-19-44-23.staticcust.wsteleport.net
8.19.44.66	PTR	mail.walt.com
8.19.44.98	PTR	ip-8-19-44-98.staticcust.wsteleport.net
8.19.44.109	PTR	ip-8-19-44-109.staticcust.wsteleport.net
8.19.44.109	A	sleg.org
8.19.44.116	PTR	ip-8-19-44-116.staticcust.wsteleport.net
8.19.44.166	PTR	webmail.divinehomecareca.com
8.19.44.166	A	webmail.wallbedsnmoreaz.com
8.19.44.166	A	mail.divinehomecareca.com
8.19.44.178	A+PTR	ip-8-19-44-178.staticcust.wsteleport.net
8.19.44.227	A+PTR	host1.officerelief.com
8.19.44.227	A	ip-8-19-44-227.staticcust.wsteleport.net
8.19.44.232	PTR	ip-8-19-44-232.staticcust.wsteleport.net
8.19.44.241	PTR	ip-8-19-44-241.staticcust.wsteleport.net
8.19.44.241	A	ns1.wsteleport.com
8.19.44.242	A	ns2.crosslinknetworks.com
8.19.44.243	A+PTR	smtp.mycln.net
8.19.45.17	A+PTR	ip-8-19-45-17.staticcust.wsteleport.net
8.19.45.22	A+PTR	ip-8-19-45-22.staticcust.wsteleport.net
8.19.45.22	A	techsupport.osisoft.com
8.19.45.28	PTR	ip-8-19-45-28.staticcust.wsteleport.net
8.19.45.28	A	testsupport.osisoft.com
8.19.45.30	PTR	ip-8-19-45-30.cust.crosslinknet.com
8.19.45.30	A	nameserver2.osisoft.com
8.19.45.30	A	ip-8-19-45-30.staticcust.wsteleport.net
8.19.45.34	PTR	ip-8-19-45-34.staticcust.wsteleport.net
8.19.45.34	A	picoresight.com
8.19.45.69	PTR	ip-8-19-45-69.staticcust.wsteleport.net
8.19.45.254	PTR	ip-8-19-45-254.staticcust.wsteleport.net
8.19.46.35	PTR	ip-8-19-46-35.cust.crosslinknet.com
8.19.46.123	A+PTR	corp.napoakland.com
8.19.46.150	PTR	mail.sutta.com
8.19.46.186	A+PTR	ip-8-19-46-186.cust.crosslinknet.com
8.19.46.186	A	endofleaselogistics.com
8.19.46.188	A	ns2.myhostingaccount.info
8.19.46.188	A	navarakcoding.com
8.19.47.58	A	mail.dcmetals.com
8.19.47.84	A	smtp.fulfillco.com
8.19.47.195	A+PTR	sl.section-8-listing.com
8.19.47.201	A+PTR	ip-8-19-47-201.cust.crosslinknet.com