Robtex

Up: 64.33.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.33.228.0/23
Down right: 64.33.230.0/23

IP	Type	Hostname
64.33.228.27	A+PTR	64-33-228-27.p0.itctel.com
64.33.228.44	A+PTR	64-33-228-44.p0.itctel.com
64.33.228.45	A+PTR	64-33-228-45.p0.itctel.com
64.33.228.64	A+PTR	64-33-228-64.p0.itctel.com
64.33.228.168	A+PTR	64-33-228-168.p0.itctel.com
64.33.228.240	A+PTR	64-33-228-240.p0.itctel.com
64.33.229.32	A	64-33-229-32.p0.itctel.com
64.33.230.0	PTR	64-33-230-0.p0.itctel.com
64.33.230.1	A+PTR	64-33-230-1.p0.itctel.com
64.33.230.4	A+PTR	64-33-230-4.p0.itctel.com
64.33.230.13	A+PTR	64-33-230-13.p0.itctel.com
64.33.230.32	A+PTR	64-33-230-32.p0.itctel.com
64.33.230.50	A+PTR	64-33-230-50.p0.itctel.com
64.33.230.56	A+PTR	64-33-230-56.p0.itctel.com
64.33.230.61	A+PTR	64-33-230-61.p0.itctel.com
64.33.230.64	A+PTR	64-33-230-64.p0.itctel.com
64.33.230.81	A+PTR	64-33-230-81.p0.itctel.com
64.33.230.84	A+PTR	64-33-230-84.p0.itctel.com
64.33.230.98	A+PTR	64-33-230-98.p0.itctel.com
64.33.230.111	A+PTR	64-33-230-111.p0.itctel.com
64.33.230.112	A+PTR	64-33-230-112.p0.itctel.com
64.33.230.116	A+PTR	64-33-230-116.p0.itctel.com
64.33.230.121	A+PTR	64-33-230-121.p0.itctel.com
64.33.230.125	A+PTR	64-33-230-125.p0.itctel.com
64.33.230.128	A+PTR	64-33-230-128.p0.itctel.com
64.33.230.132	A+PTR	64-33-230-132.p0.itctel.com
64.33.230.144	A+PTR	64-33-230-144.p0.itctel.com
64.33.230.152	A+PTR	64-33-230-152.p0.itctel.com
64.33.230.175	A+PTR	64-33-230-175.p0.itctel.com
64.33.230.187	A+PTR	64-33-230-187.p0.itctel.com
64.33.230.203	A+PTR	64-33-230-203.p0.itctel.com
64.33.230.204	A+PTR	64-33-230-204.p0.itctel.com
64.33.230.209	A+PTR	64-33-230-209.p0.itctel.com
64.33.230.212	A+PTR	64-33-230-212.p0.itctel.com
64.33.230.213	A+PTR	64-33-230-213.p0.itctel.com
64.33.230.230	A+PTR	64-33-230-230.p0.itctel.com
64.33.230.240	A+PTR	64-33-230-240.p0.itctel.com
64.33.231.6	A+PTR	64-33-231-6.p0.itctel.com
64.33.231.243	PTR	64-33-231-243.p0.itctel.com