Robtex

Up: 216.12.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.12.144.0/22
Down right: 216.12.148.0/22

IP	Type	Hostname
216.12.144.10	A	csasalt.symantec.com
216.12.144.16	A	lc1alt.symantec.com
216.12.144.33	PTR	xsas.symantec.com
216.12.144.34	A	msq-sev-prod.norton.com
216.12.144.48	A	mmm-prod-sev1.norton.com
216.12.144.50	A	sshomealt.symantec.com
216.12.144.51	A+PTR	sssgsalt.symantec.com
216.12.144.52	A	ssawalt.symantec.com
216.12.144.56	PTR	xcostalt.symantec.com
216.12.144.57	A+PTR	sasrootalt.symantec.com
216.12.144.58	A+PTR	sluplistalt.symantec.com
216.12.144.59	A+PTR	sosftpalt.symantec.com
216.12.144.60	A	pif.symantec.com
216.12.144.80	PTR	siaw.symantec.com
216.12.144.90	A+PTR	sigs.symantec.com
216.12.144.90	A	sigs.symantec.com.gtm.symantec.com
216.12.144.90	A	sigs1alt.symantec.com
216.12.145.1	PTR	v425.isg2k-01-3e5.ops.servervault.com
216.12.145.16	A+PTR	symantec-liveupdate-vip01.vip.cust.servervault.com
216.12.145.17	A	antivirus.norton.com
216.12.145.20	A	www.shop.symantec.com
216.12.145.20	A	*.openstoragelayer.net
216.12.146.10	PTR	isc14.isc2.org
216.12.146.40	PTR	isc11.isc2.org
216.12.146.111	A	isc17.cust.servervault.com
216.12.146.112	PTR	mail.isc2.org
216.12.146.113	PTR	isc12.isc2.org
216.12.146.114	PTR	mail.isc2.org
216.12.146.118	A	isc39.cust.servervault.com
216.12.146.120	PTR	exchange.isc2.org
216.12.146.144	PTR	cyberexchange.isc2.org
216.12.146.145	PTR	vpn.isc2.org
216.12.146.146	A+PTR	vlan465.ns50-01-3c16.ops.servervault.com
216.12.146.201	PTR	isc21.cust.servervault.com
216.12.146.203	PTR	isc27.cust.servervault.com
216.12.146.232	PTR	ns208-02-3c16.ops.servervault.com
216.12.147.8	A+PTR	ssg5-01-3d8.ops.servervault.com
216.12.147.11	A+PTR	ssg350-01-034.ops.servervault.com
216.12.147.12	A	ssg350-02-034.ops.servervault.com
216.12.147.69	A	vastec-dr01.cust.servervault.com
216.12.147.70	A	vastec-web01.cust.servervault.com
216.12.147.71	A	www.vastecondemand.com
216.12.147.71	A	vastecondemand.com
216.12.148.20	A	ecnext10.cust.servervault.com
216.12.148.25	PTR	ecnext11.ecnext.com
216.12.148.25	PTR	smtp11.ecnext.com
216.12.148.26	PTR	smtp24.ecnext.com
216.12.148.41	PTR	smtp16.ecnext.com
216.12.148.42	PTR	smtp17.ecnext.com
216.12.148.48	PTR	ecnext42.cust.servervault.com
216.12.148.49	A+PTR	ecnext43.cust.servervault.com
216.12.148.50	PTR	smtp44.manta.com
216.12.148.51	PTR	smtp45.manta.com
216.12.148.64	PTR	ecnext-online.com
216.12.148.64	PTR	www.ecnext-online.com
216.12.148.64	PTR	www.ecnext.com
216.12.148.65	PTR	ecnext.com
216.12.148.66	PTR	ichapters.ecnext.com
216.12.148.69	A	goliathinfo.com
216.12.148.71	A	ecnext-vip08.vip.cust.servervault.com
216.12.148.72	PTR	ecnext-vip09.vip.cust.servervault.com
216.12.148.73	PTR	www.pharmainstitute.com
216.12.148.73	PTR	ecnext-vip10.vip.cust.servervault.com
216.12.148.73	A	pharmainstitute.com
216.12.148.80	PTR	www.ichapters.net
216.12.148.82	PTR	www.automotiveresearch.com
216.12.148.83	PTR	www.ichapters.com
216.12.148.136	PTR	smtp30.ecnext.com
216.12.148.137	PTR	smtp33.ecnext.com
216.12.148.138	PTR	smtp34.ecnext.com
216.12.148.144	PTR	smtp44.manta.com
216.12.148.145	PTR	smtp45.manta.com
216.12.148.147	PTR	smtp17.ecnext.com
216.12.148.154	PTR	smtp16.ecnext.com
216.12.148.160	PTR	smtp38.manta.com
216.12.148.161	PTR	smtp46.manta.com
216.12.148.162	PTR	smtp55.manta.com
216.12.148.163	PTR	smtp56.manta.com
216.12.148.168	PTR	smtp32.ecnext.com
216.12.148.169	PTR	smtp35.ecnext.com
216.12.148.182	A	ecnext73.cust.servervault.com
216.12.149.100	A	mx.pod3.saashr.com
216.12.150.8	A+PTR	apprh21.cust.servervault.com
216.12.150.9	A+PTR	apprh22.cust.servervault.com
216.12.150.16	A	apprh21.cust.servervault.com
216.12.150.17	PTR	machinelinkb2b.exostar.com
216.12.150.17	A	apprh21.cust.servervault.com
216.12.150.72	A+PTR	apprh21.cust.servervault.com
216.12.150.73	A+PTR	apprh22.cust.servervault.com
216.12.150.136	PTR	apweb21.cust.servervault.com
216.12.150.137	PTR	apweb22.cust.servervault.com
216.12.151.10	A+PTR	apapp21.cust.servervault.com
216.12.151.66	PTR	saic-tsa-ap2prd.vpn.ops.servervault.com
216.12.151.147	A+PTR	smtp128.manta.com
216.12.151.148	A	smtp129.manta.com
216.12.151.233	PTR	blog.manta.com
216.12.151.250	PTR	smtp133.manta.com
216.12.151.251	PTR	smtp134.manta.com