Robtex

Up: 66.44.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 66.44.64.0/20
Down right: 66.44.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.44.67.88	PTR	static.rcn.com
66.44.68.247	PTR	static.rcn.com
66.44.69.216	PTR	static.rcn.com
66.44.69.216	A	mail.okinawabuyers.jp
66.44.69.216	A	okinawabuyers.jp
66.44.71.89	PTR	static.rcn.com
66.44.74.1	PTR	66-44-74-1.md.subnet.cable.rcncustomer.com
66.44.74.1	A	bdl1.slvr-ubr1.lnh-slvr.md.cable.rcn.net
66.44.74.41	A	bdl1.slvr-ubr1.lnh-slvr.md.cable.rcn.net
66.44.74.65	PTR	66-44-74-65.md.subnet.cable.rcn.com
66.44.74.65	A	bdl1.129-cbr1.lnh-129.md.cable.rcn.net
66.44.74.66	A	66-44-74-66.md.subnet.cable.rcn.com
66.44.74.73	A	bdl1.129-cbr1.lnh-129.md.cable.rcn.net
66.44.74.81	A	bdl1.grg-cbr2.lnh-grg.md.cable.rcn.net
66.44.74.97	PTR	66-44-74-97.md.subnet.cable.rcncustomer.com
66.44.74.97	A	bdl1.slvr-ubr1.lnh-slvr.md.cable.rcn.net
66.44.74.97	A	66-44-74-97.md.subnet.cable.rcn.com
66.44.74.105	A	bdl1.grg-cbr2.lnh-grg.md.cable.rcn.net
66.44.76.1	PTR	c3-0.slvr-ubr1.lnh-slvr.md.cable.rcn.net
66.44.76.1	PTR	bdl1.eas-ubr2.atw-eas.pa.cable.rcn.net
66.44.80.1	A+PTR	66-44-80-1.c3-0.slvr-ubr1.lnh-slvr.md.cable.rcn.com
66.44.80.1	PTR	bdl1.eas-ubr2.atw-eas.pa.cable.rcn.net
66.44.81.82	A	66-44-81-82.s1360.c3-0.slvr-cbr1.lnh-slvr.md.cable.rcncustomer.com
66.44.81.90	A	66-44-81-90.s1368.c3-0.slvr-cbr1.lnh-slvr.md.cable.rcncustomer.com
66.44.84.4	PTR	66-44-84-4.s1020.apx1.lnh.md.dialup.rcn.com
66.44.84.130	A	occ-0-191-2433.1.nflxso.net
66.44.84.130	A	occ-2-191-2433.1.nflxso.net
66.44.84.130	A	occ-0-191-2430.1.nflxso.net
66.44.84.134	A	occ-0-191-2433.1.nflxso.net
66.44.84.134	A	occ-2-191-2433.1.nflxso.net
66.44.84.134	A	occ-0-191-2430.1.nflxso.net
66.44.84.178	A	occ-0-191-2433.1.nflxso.net
66.44.84.178	A	occ-2-191-2433.1.nflxso.net
66.44.84.178	A	occ-0-191-2430.1.nflxso.net
66.44.84.182	A	occ-0-191-2433.1.nflxso.net
66.44.84.182	A	occ-2-191-2433.1.nflxso.net
66.44.84.182	A	occ-0-191-2430.1.nflxso.net
66.44.84.186	A	occ-0-191-2433.1.nflxso.net
66.44.84.186	A	occ-2-191-2433.1.nflxso.net
66.44.84.186	A	occ-0-191-2430.1.nflxso.net
66.44.84.228	A	bdle4-sub211.aggr2.lnh.md.rcn.net
66.44.84.228	A	bdle4-sub211.aggr1.lnh.md.rcn.net
66.44.91.1	A+PTR	bdl1.bth-ubr1.lnh-bth.md.cable.rcn.net
66.44.91.1	PTR	c3-0.bth-ubr1.lnh-bth.md.cable.rcn.net
66.44.92.3	A	my.labschool.org
66.44.92.3	A	liberty.labschool.org
66.44.92.9	A	labrcn10.l.subnet.rcn.com
66.44.92.11	A	labrcn12.l.subnet.rcn.com
66.44.92.130	A+PTR	dcaccess03.l.subnet.rcn.com
66.44.92.163	A+PTR	mail.nrmca.org
66.44.93.0	A	chechaexe01.c.subnet.rcn.com
66.44.93.1	A	chechaexe02.c.subnet.rcn.com
66.44.93.2	A	chechaexe03.c.subnet.rcn.com
66.44.93.6	A	remote.nexusinfrastructure.com
66.44.94.4	A	host04.wheelerisp.w.subnet.rcn.com
66.44.94.5	A	host05.wheelerisp.w.subnet.rcn.com
66.44.94.7	A	host07.wheelerisp.w.subnet.rcn.com
66.44.94.23	A	host07.montgomery.county.ips.m.subnet.rcn.com
66.44.94.163	A+PTR	nationalccinc104.n.subnet.rcn.com
66.44.94.163	A	mail2.nccinc.org
66.44.95.66	A+PTR	mr-118181ab.lnh.md.smb.rcn.net