Robtex

Up: 66.195.236.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 66.195.238.0/24
Down right: 66.195.239.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.195.238.25	PTR	horizonsystems.com
66.195.238.240	PTR	horizonsystems.com
66.195.238.241	PTR	horizonsystems.com
66.195.238.242	PTR	horizonsystems.com
66.195.238.242	A	mail.horizonsystems.com
66.195.238.243	PTR	horizonsystems.com
66.195.238.244	A+PTR	horizonsystems.com
66.195.238.244	A	www.horizonsystems-llc.com
66.195.238.244	A	www.hznsys.com
66.195.238.245	PTR	mail2.horizonsystems.com
66.195.238.246	PTR	horizonsystems.com
66.195.238.247	PTR	horizonsystems.com
66.195.238.248	PTR	horizonsystems.com
66.195.238.249	PTR	horizonsystems.com
66.195.238.250	PTR	horizonsystems.com
66.195.238.251	PTR	horizonsystems.com
66.195.238.252	PTR	horizonsystems.com
66.195.238.253	PTR	horizonsystems.com
66.195.238.254	PTR	horizonsystems.com
66.195.238.255	PTR	horizonsystems.com
66.195.239.0	PTR	66-195-239-0.brescobroadband.com
66.195.239.1	PTR	66-195-239-1.brescobroadband.com
66.195.239.2	PTR	66-195-239-2.brescobroadband.com
66.195.239.3	PTR	66-195-239-3.brescobroadband.com
66.195.239.4	PTR	66-195-239-4.brescobroadband.com
66.195.239.5	PTR	66-195-239-5.brescobroadband.com
66.195.239.6	PTR	66-195-239-6.brescobroadband.com
66.195.239.7	PTR	66-195-239-7.brescobroadband.com
66.195.239.8	PTR	66-195-239-8.brescobroadband.com
66.195.239.9	PTR	66-195-239-9.brescobroadband.com
66.195.239.10	PTR	66-195-239-10.brescobroadband.com
66.195.239.11	PTR	66-195-239-11.brescobroadband.com
66.195.239.12	PTR	66-195-239-12.brescobroadband.com
66.195.239.13	PTR	66-195-239-13.brescobroadband.com
66.195.239.14	PTR	66-195-239-14.brescobroadband.com
66.195.239.15	PTR	66-195-239-15.brescobroadband.com
66.195.239.16	PTR	66-195-239-16.brescobroadband.com
66.195.239.130	PTR	66-195-239-130.brescobroadband.com
66.195.239.131	PTR	66-195-239-131.brescobroadband.com
66.195.239.132	PTR	66-195-239-132.brescobroadband.com
66.195.239.133	PTR	66-195-239-133.brescobroadband.com
66.195.239.134	PTR	66-195-239-134.brescobroadband.com
66.195.239.135	PTR	66-195-239-135.brescobroadband.com
66.195.239.136	PTR	66-195-239-136.brescobroadband.com
66.195.239.137	PTR	66-195-239-137.brescobroadband.com
66.195.239.138	PTR	66-195-239-138.brescobroadband.com
66.195.239.139	PTR	66-195-239-139.brescobroadband.com
66.195.239.140	PTR	66-195-239-140.brescobroadband.com
66.195.239.141	PTR	66-195-239-141.brescobroadband.com
66.195.239.142	PTR	66-195-239-142.brescobroadband.com