Robtex

Up: 185.140.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.140.48.0/23
Down right: 185.140.50.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.140.48.227	A	archive.ntp.org
185.140.48.228	A	psp2.ntp.org
185.140.48.229	A+PTR	support.ntp.org
185.140.48.230	A	bugs.ntp.org
185.140.48.231	A	ntp.org
185.140.48.234	A+PTR	ns2.ntp.org
185.140.48.235	A+PTR	mail2.ntp.org
185.140.48.241	A+PTR	psp3.ntp.org
185.140.48.241	A	doc.ntp.org
185.140.48.243	A+PTR	lists.ntp.org
185.140.48.246	A+PTR	ns1.ntp.org
185.140.48.247	A	mail1.ntp.org
185.140.49.163	A+PTR	web01.markley.esmdigital.net
185.140.49.163	A	esmdigitalresources.com
185.140.49.163	A	esmmedia.com
185.140.50.19	PTR	compute-185-140-50-19.markleycloud.com
185.140.50.19	A	bos1-ntp1.markleycloud.com
185.140.50.100	PTR	compute-185-140-50-100.markleycloud.com
185.140.51.2	A+PTR	vpn.bos1.markleycloud.com
185.140.51.3	PTR	bos1-ntp1.markleycloud.com
185.140.51.11	A+PTR	cloudconnect.bos1.markleycloud.com
185.140.51.12	A+PTR	cloudconnect.bos1.markleycloud.com
185.140.51.13	A+PTR	cloudconnect.bos1.markleycloud.com
185.140.51.163	PTR	compute-185-140-51-163.markleycloud.com
185.140.51.163	A	com.peoples.com
185.140.51.163	A	peoples.com