Robtex

Up: 64.89.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.89.8.0/22
Down right: 64.89.12.0/22

IP	Type	Hostname
64.89.8.49	A	km002.biz
64.89.8.201	A	oglebay.1st.net
64.89.9.33	A	valleycinema3.1st.net
64.89.9.49	PTR	64-89-9-49.static.wntpr.net
64.89.9.69	A	mail2.atentousa.com
64.89.9.70	A	guaguapr.com
64.89.9.70	A	caribetrack.com
64.89.9.70	A	mail.caribetrackpr.com
64.89.9.83	A	uovrtl.1st.net
64.89.9.95	A	tintman01.1st.net
64.89.9.114	PTR	64-89-9-114.static.wntpr.net
64.89.9.114	A	valleye.1st.net
64.89.9.114	A	valleye.speed1.net
64.89.9.141	A	caribbeanfranchisepr.com
64.89.9.226	A	relayforlife.1st.net
64.89.9.233	A	www.dhdata.com
64.89.9.237	A	mail.dlf.pr.gov
64.89.9.237	A	dlf.pr.gov
64.89.9.248	A	fromtheheart.1st.net
64.89.9.253	A	ssl4.1st.net
64.89.10.2	PTR	64-89-10-2.static.wntpr.net
64.89.10.27	A	markhenry.1st.net
64.89.10.141	A	farmaciabelmonte.com
64.89.10.141	A	mail.farmaciabelmonte.com
64.89.10.177	A	theunknown.1st.net
64.89.10.221	A	pcelements.com
64.89.10.225	A	lwlpartners.com
64.89.11.26	PTR	64-89-11-26.static.wntpr.net
64.89.11.26	A	ns2.scf-pr.com
64.89.12.2	A	fatman.1st.net
64.89.12.221	A	corporatpr.com
64.89.12.221	A	fd-cci.com
64.89.13.3	A+PTR	mail.camarapr.net
64.89.13.3	A	*.camarapr.net
64.89.13.3	A	camarapr.net
64.89.13.41	PTR	64-89-13-41.static.wntpr.net
64.89.13.81	A	mail.profamiliapr.org
64.89.13.93	A	64-89-13-93.static.wntpr.com
64.89.13.97	A	webmail.centroararat.org
64.89.13.104	PTR	64-89-13-104.static.wntpr.net
64.89.13.234	A	nc2k.newcomm2000.com
64.89.14.194	A	mail.med-bio.com
64.89.14.225	A	mail.hcccpa.com
64.89.15.114	PTR	64-89-15-114.static.wntpr.net
64.89.15.225	PTR	64-89-15-225.static.wntpr.net
64.89.15.237	A	mail.aatours.net
64.89.15.237	A	mail.aatours.com