Robtex

Up: 216.138.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.138.64.0/21
Down right: 216.138.72.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.138.64.0	PTR	unsi-216-138-64-0.unsi.net
216.138.64.35	A	mail.mediacart.com
216.138.65.96	PTR	unsi-216-138-65-96.unsi.net
216.138.65.98	PTR	unsi-216-138-65-98.unsi.net
216.138.65.131	PTR	unsi-216-138-65-131.unsi.net
216.138.65.146	PTR	unsi-216-138-65-146.unsi.net
216.138.65.211	PTR	unsi-216-138-65-211.unsi.net
216.138.66.2	PTR	unsi-216-138-66-2.unsi.net
216.138.66.60	A	dns1.planeteshop.com
216.138.66.61	A	dns2.planeteshop.com
216.138.68.3	PTR	unsi-216-138-68-3.unsi.net
216.138.68.3	A	postasylum.com
216.138.68.10	A	pureevilmusic.com
216.138.68.17	PTR	unsi-216-138-68-17.unsi.net
216.138.68.167	A	havenbehavioral.org
216.138.69.1	PTR	unsi-216-138-69-1.unsi.net
216.138.69.99	PTR	unsi-216-138-69-99.unsi.net
216.138.69.105	A	mail.advantix.net
216.138.69.105	A	mail.advantixsolutions.com
216.138.69.228	PTR	unsi-216-138-69-228.unsi.net
216.138.69.232	PTR	unsi-216-138-69-232.unsi.net
216.138.71.4	A	fbmx1-test.brownies.net
216.138.71.66	PTR	mail.cvlci.com
216.138.71.112	PTR	unsi-216-138-71-112.unsi.net
216.138.71.130	PTR	mail.taxquest.com
216.138.72.4	A	mail.apogeepartners.net
216.138.72.18	PTR	unsi-216-138-72-18.unsi.net
216.138.72.84	A	mail.woodhausinc.com
216.138.72.130	PTR	mail.shannongracey.com
216.138.72.146	PTR	unsi-216-138-72-146.unsi.net
216.138.72.202	A	mail.dallaslutheranschool.org
216.138.72.202	A	mail60704.dallaslutheranschool.com
216.138.72.227	PTR	mail.utb.com
216.138.72.242	PTR	unsi-216-138-72-242.unsi.net
216.138.73.18	PTR	unsi-216-138-73-18.unsi.net
216.138.73.18	A	mail.cbs11tv.com
216.138.73.18	A	mail.ktvt.com
216.138.73.19	PTR	unsi-216-138-73-19.unsi.net
216.138.73.67	A	mail.goodloerealty.com
216.138.73.128	PTR	unsi-216-138-73-128.unsi.net
216.138.73.142	A	queue.optimumreturn.com
216.138.73.150	A	mail.legacytexasgroup.org
216.138.73.150	A	mail.legacytexasbank.net
216.138.73.208	PTR	unsi-216-138-73-208.unsi.net
216.138.73.211	PTR	unsi-216-138-73-211.unsi.net
216.138.74.0	PTR	unsi-216-138-74-0.unsi.net
216.138.74.82	PTR	mail.tcresidential.com
216.138.74.138	A	mail.4c2electrical.com
216.138.74.206	A	exchange.gvbarchitects.com
216.138.75.51	PTR	lymba.com
216.138.75.119	A	ebuenoclub.com
216.138.78.3	PTR	unsi-216-138-78-3.unsi.net
216.138.78.240	PTR	unsi-216-138-78-240.unsi.net
216.138.79.33	A	hhmerchantusa.com
216.138.79.33	A	mypcaccessories.com
216.138.79.33	A	centuryartdfw.com
216.138.79.73	A	www.ricepotexpress.com
216.138.79.73	A	ricepotexpress.com
216.138.79.73	A	www.highlandfire.com
216.138.79.85	A	actionstar.com
216.138.79.85	A	source1tech.com
216.138.79.226	PTR	unsi-216-138-79-226.unsi.net
216.138.79.226	A	dns3.multix.com