Robtex

Up: 65.163.192.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 65.163.193.0/25
Down right: 65.163.193.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
65.163.193.4	PTR	65.163.193.4.halldata.com
65.163.193.5	PTR	65.163.193.5.halldata.com
65.163.193.12	PTR	65.163.193.12.halldata.com
65.163.193.18	PTR	65.163.193.18.halldata.com
65.163.193.18	A	*.hdssync.com
65.163.193.18	A	hdsconfirm.com
65.163.193.20	PTR	65.163.193.20.halldata.com
65.163.193.20	A	unsubscribe.1105pubs.com
65.163.193.23	PTR	65.163.193.23.halldata.com
65.163.193.35	PTR	65.163.193.35.halldata.com
65.163.193.54	PTR	65.163.193.54.halldata.com
65.163.193.95	PTR	65.163.193.95.halldata.com
65.163.193.111	PTR	65.163.193.111.halldata.com
65.163.193.119	PTR	65.163.193.119.halldata.com
65.163.193.121	PTR	65.163.193.121.halldata.com
65.163.193.129	A	gateway129.halldata.com
65.163.193.132	A+PTR	bullsdb-02.halldata.com
65.163.193.135	A	dump-hds-01.halldata.com
65.163.193.137	A	ads-hds-01.halldata.com
65.163.193.139	A	smtp-cmp-02.halldata.com
65.163.193.140	PTR	65.163.193.140.halldata.com
65.163.193.140	A	informabioscience-news.com
65.163.193.140	A	digital.crn.com
65.163.193.141	A+PTR	trk1.halldata.com
65.163.193.142	A+PTR	trk2.halldata.com
65.163.193.149	A	virt-hds-01.halldata.com
65.163.193.151	A	dbs-hds-07.halldata.com
65.163.193.153	A+PTR	dbs-hds-03.halldata.com
65.163.193.154	A	virt-hds-02.halldata.com
65.163.193.155	A+PTR	ns1.halldata.com
65.163.193.155	A	zenoss.halldata.com
65.163.193.157	PTR	65.163.193.157.halldata.com
65.163.193.161	A+PTR	dom-hds-03.halldata.com
65.163.193.162	A	dom-hds-02.halldata.com
65.163.193.166	A	virt-hds-03.halldata.com
65.163.193.170	A+PTR	devts-hds-01.halldata.com
65.163.193.171	A+PTR	edg-hds-01.halldata.com
65.163.193.174	A	dbs-hds-06.halldata.com
65.163.193.175	A	dbs-hds-05.halldata.com
65.163.193.183	PTR	65.163.193.183.halldata.com
65.163.193.183	A	*.hdsmon.com
65.163.193.183	A	hdsmail.com
65.163.193.200	PTR	65.163.193.200.halldata.com
65.163.193.203	A	jvm-hds-03.halldata.com
65.163.193.205	A	dbs-hds-02.halldata.com
65.163.193.206	A	dbs-hds-08.halldata.com
65.163.193.230	PTR	65.163.193.230.halldata.com
65.163.193.241	PTR	65.163.193.241.halldata.com
65.163.193.241	A	mail1.hdsconfirm.com
65.163.193.242	PTR	65.163.193.242.halldata.com
65.163.193.242	A	mail2.hdsconfirm.com
65.163.193.243	PTR	xen-unauth-02.halldata.com
65.163.193.243	A	mail1.hdssync.com
65.163.193.244	PTR	app-auth-01.halldata.com
65.163.193.244	A	mail2.hdssync.com
65.163.193.246	PTR	dev-auth-01.halldata.com
65.163.193.248	PTR	uat-auth-02.halldata.com
65.163.193.252	PTR	app-unauth-02.halldata.com