Robtex

Up: 72.1.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 72.1.48.0/21
Down right: 72.1.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.1.48.1	A	off-g-vl4.ntinet.com
72.1.48.2	A	cam-f2.ntinet.com
72.1.48.6	A	bow-f4.ntinet.com
72.1.48.9	A	cam-f5.ntinet.com
72.1.48.17	A+PTR	cam-f4.ntinet.com
72.1.48.30	A	hhl-f6.ntinet.com
72.1.48.49	A+PTR	san-f5.ntinet.com
72.1.48.54	A+PTR	hhl-f5.ntinet.com
72.1.48.57	A	eut-f7.ntinet.com
72.1.48.58	A	hhl-f2.ntinet.com
72.1.48.69	A	hhl-f3.ntinet.com
72.1.48.130	A+PTR	ns1.ntinet.com
72.1.48.130	A	ns01.ntinet.com
72.1.48.131	A+PTR	ns2.ntinet.com
72.1.48.131	A	ns02.ntinet.com
72.1.48.133	PTR	ns4.ntinet.com
72.1.48.147	PTR	www.ntinet.com
72.1.48.147	A	orangeburglawyers.com
72.1.48.147	A	charlestonaluminum.com
72.1.48.152	A	orangeburgonline.com
72.1.48.161	A	plat.ntinet.com
72.1.48.162	A	portal.ntinet.com
72.1.48.162	A	customer.ntinet.com
72.1.48.175	PTR	ntinetinc.com
72.1.48.175	A	orangeburgonline.com
72.1.48.240	A+PTR	e-gate2.ntinet.com
72.1.48.240	A	e-gate1.ntinet.com
72.1.48.247	A	wireless.ntinet.com
72.1.48.252	A	platdsvc.ntinet.com
72.1.53.18	PTR	san-dhcp-18.wireless.ntinet.com
72.1.53.50	PTR	san-dhcp-50.wireless.ntinet.com
72.1.53.51	PTR	san-dhcp-51.wireless.ntinet.com
72.1.53.81	PTR	san-dhcp-81.wireless.ntinet.com
72.1.53.83	PTR	san-dhcp-83.wireless.ntinet.com
72.1.53.96	PTR	san-dhcp-96.wireless.ntinet.com
72.1.53.128	PTR	san-dhcp-128.wireless.ntinet.com
72.1.53.129	PTR	san-dhcp-129.wireless.ntinet.com
72.1.53.131	PTR	san-dhcp-131.wireless.ntinet.com
72.1.53.146	PTR	san-dhcp-146.wireless.ntinet.com
72.1.53.160	PTR	san-dhcp-160.wireless.ntinet.com
72.1.53.208	PTR	san-dhcp-208.wireless.ntinet.com
72.1.53.224	PTR	san-dhcp-224.wireless.ntinet.com
72.1.53.242	PTR	san-dhcp-242.wireless.ntinet.com
72.1.56.66	A+PTR	officevoip.ntinet.com
72.1.56.253	A	ndp1.ntinet.com
72.1.62.104	A	akkineni.com
72.1.62.222	A+PTR	mail.c21themooregroup.com
72.1.62.222	A	mail2.c21themooregroup.com
72.1.62.222	A	mail2.c21tmg.com
72.1.63.2	A	internaldevcore.com