Robtex

Up: 64.56.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 64.56.0.0/21
Down right: 64.56.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.56.0.0	A+PTR	ip-64-56-0-0.available.eatel.net
64.56.0.193	PTR	ip-64-56-0-193.available.eatel.net
64.56.1.0	PTR	ip-64-56-1-0.available.eatel.net
64.56.1.3	A+PTR	ip-64-56-1-3.available.eatel.net
64.56.1.8	A	ip-64-56-1-8.available.eatel.net
64.56.1.9	A	ip-64-56-1-9.available.eatel.net
64.56.1.33	PTR	ip-64-56-1-33.available.eatel.net
64.56.1.46	A	ip-64-56-1-46.available.eatel.net
64.56.1.48	PTR	ip-64-56-1-48.available.eatel.net
64.56.1.57	A	ip-64-56-1-57.available.eatel.net
64.56.1.64	A+PTR	ip-64-56-1-64.available.eatel.net
64.56.1.130	PTR	ip-64-56-1-130.available.eatel.net
64.56.1.155	A	ip-64-56-1-155.available.eatel.net
64.56.1.186	A	ip-64-56-1-186.available.eatel.net
64.56.1.207	A	ip-64-56-1-207.available.eatel.net
64.56.1.210	A+PTR	ip-64-56-1-210.available.eatel.net
64.56.1.224	PTR	ip-64-56-1-224.available.eatel.net
64.56.1.231	A	ip-64-56-1-231.available.eatel.net
64.56.1.244	A	ip-64-56-1-244.available.eatel.net
64.56.2.7	A	ip-64-56-2-7.available.eatel.net
64.56.2.8	A	ip-64-56-2-8.available.eatel.net
64.56.2.224	A+PTR	ip-64-56-2-224.available.eatel.net
64.56.2.246	A	ip-64-56-2-246.available.eatel.net
64.56.2.255	A	ip-64-56-2-255.available.eatel.net
64.56.3.65	PTR	ip-64-56-3-65.available.eatel.net
64.56.6.56	A	net-lamar-t1.intersurf.net
64.56.6.162	A	border1-ltpa-t1.intersurf.net
64.56.7.2	A+PTR	ip-64-56-7-2.available.eatel.net
64.56.7.10	A	spamtitan.ibervilleparish.com
64.56.7.51	A+PTR	ip-64-56-7-51.available.eatel.net
64.56.7.199	A	ip-64-56-7-199.available.eatel.net
64.56.8.3	A	ns1.myappro.com
64.56.8.3	A	aspdns.myappro.com
64.56.8.18	A	private.myappro.com
64.56.8.20	A	p2p.myappro.com
64.56.9.85	A	mail2.approsystems.com
64.56.9.85	A	appro33.approsystems.com
64.56.10.11	A+PTR	imail.apsb.org
64.56.10.12	A+PTR	mail.apsb.org
64.56.10.12	A	webmail.apsb.org
64.56.10.13	A	ascensionearlychildhood.org
64.56.10.32	A	ps.apsb.org
64.56.10.34	A	prtg.apsb.org
64.56.10.40	A	ascensionearlychildhood.org
64.56.10.45	A	smtp1.apsb.org
64.56.10.62	A	ckf01.apsb.org
64.56.10.236	A	ckf02.apsb.org
64.56.10.240	A	ckm01.apsb.org
64.56.10.240	A	ckm.apsb.org
64.56.10.245	A	ckm.apsb.org
64.56.10.245	A	ckm02.apsb.org
64.56.12.20	PTR	outlook.bcbsla.com
64.56.12.71	PTR	citrixsg.bcbsla.com
64.56.12.81	PTR	test.bmshealth.com
64.56.12.81	A+PTR	test.bmshealth.net
64.56.12.81	A+PTR	test.bmshealth.org
64.56.12.120	PTR	testweb2.bcbsla.com
64.56.13.18	PTR	es2-inc.com
64.56.13.18	PTR	mail.es2-inc.com
64.56.13.18	PTR	ip-64-56-13-18.static.eatel.net
64.56.13.147	PTR	ip-64-56-13-147.static.eatel.net
64.56.13.147	A	mail.ascensionmarine.com
64.56.13.168	A	mail.mcnabbcpa.com
64.56.13.168	A	ip-64-56-13-168.static.eatel.net
64.56.13.168	A	mcnabbcpa.com
64.56.13.229	A	ip-64-56-13-229.static.eatel.net
64.56.13.248	A	mail.ramseyent.com
64.56.13.253	A	ip-64-56-13-253.static.eatel.net
64.56.13.253	A	nt-mail.eatel.net
64.56.13.253	A	mail1.eatel.net