Robtex

Up: 68.84.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 68.84.0.0/21
Down right: 68.84.8.0/21

IP	Type	Hostname
68.84.0.5	A	c-68-84-0-5.hsd1.md.comcast.net
68.84.0.13	A	c-68-84-0-13.hsd1.md.comcast.net
68.84.0.28	A	c-68-84-0-28.hsd1.md.comcast.net
68.84.0.29	A	c-68-84-0-29.hsd1.md.comcast.net
68.84.0.60	A	c-68-84-0-60.hsd1.md.comcast.net
68.84.0.92	A	c-68-84-0-92.hsd1.md.comcast.net
68.84.0.94	A	c-68-84-0-94.hsd1.md.comcast.net
68.84.0.142	A	rootinhell.com
68.84.0.147	A+PTR	c-68-84-0-147.hsd1.md.comcast.net
68.84.0.179	A	c-68-84-0-179.hsd1.md.comcast.net
68.84.0.192	A	www.hippiekiller.net
68.84.0.222	A	c-68-84-0-222.hsd1.md.comcast.net
68.84.0.229	A	c-68-84-0-229.hsd1.md.comcast.net
68.84.1.4	A	c-68-84-1-4.hsd1.md.comcast.net
68.84.1.49	A	c-68-84-1-49.hsd1.md.comcast.net
68.84.1.124	A	mail.5oclock.us
68.84.1.124	A	5oclock.us
68.84.1.243	A+PTR	c-68-84-1-243.hsd1.md.comcast.net
68.84.1.254	A	c-68-84-1-254.hsd1.md.comcast.net
68.84.2.84	A	glennadams.net
68.84.4.0	PTR	c-68-84-4-0.hsd1.md.comcast.net
68.84.6.2	A+PTR	c-68-84-6-2.hsd1.va.comcast.net
68.84.6.98	PTR	c-68-84-6-98.hsd1.va.comcast.net
68.84.6.136	A	c-68-84-6-136.hsd1.va.comcast.net
68.84.6.204	A	smtp.xdoru.net
68.84.6.204	A	*.xdoru.net
68.84.6.237	A	c-68-84-6-237.hsd1.va.comcast.net
68.84.6.237	A	c-68-84-6-237.hsd1.md.comcast.net
68.84.7.22	A	c-68-84-7-22.hsd1.dc.comcast.net
68.84.7.22	A	c-68-84-7-22.hsd1.md.comcast.net
68.84.7.155	A	c-68-84-7-155.hsd1.dc.comcast.net
68.84.8.12	A	c-68-84-8-12.hsd1.va.comcast.net
68.84.8.17	A+PTR	c-68-84-8-17.hsd1.va.comcast.net
68.84.8.19	A+PTR	c-68-84-8-19.hsd1.va.comcast.net
68.84.8.36	A	c-68-84-8-36.hsd1.va.comcast.net
68.84.8.49	PTR	c-68-84-8-49.hsd1.va.comcast.net
68.84.8.71	A	c-68-84-8-71.hsd1.va.comcast.net
68.84.8.75	A	c-68-84-8-75.hsd1.va.comcast.net
68.84.8.76	A	c-68-84-8-76.hsd1.va.comcast.net
68.84.8.79	A	c-68-84-8-79.hsd1.va.comcast.net
68.84.8.94	A	c-68-84-8-94.hsd1.va.comcast.net
68.84.8.95	A	c-68-84-8-95.hsd1.va.comcast.net
68.84.8.112	PTR	c-68-84-8-112.hsd1.va.comcast.net
68.84.8.134	A	c-68-84-8-134.hsd1.va.comcast.net
68.84.8.148	A	c-68-84-8-148.hsd1.va.comcast.net
68.84.8.154	A	c-68-84-8-154.hsd1.va.comcast.net
68.84.8.165	A	c-68-84-8-165.hsd1.va.comcast.net
68.84.8.173	A	c-68-84-8-173.hsd1.va.comcast.net
68.84.8.177	A+PTR	c-68-84-8-177.hsd1.va.comcast.net
68.84.8.184	A	c-68-84-8-184.hsd1.va.comcast.net
68.84.8.200	A	c-68-84-8-200.hsd1.va.comcast.net
68.84.8.234	A	c-68-84-8-234.hsd1.va.comcast.net
68.84.8.240	A+PTR	c-68-84-8-240.hsd1.va.comcast.net
68.84.8.243	A+PTR	c-68-84-8-243.hsd1.va.comcast.net
68.84.12.223	A	c-68-84-12-223.hsd1.dc.comcast.net
68.84.14.5	A	smtp.tibs.net
68.84.14.5	A	smtp.bass.org
68.84.14.5	A	c-68-84-14-5.hsd1.md.comcast.net
68.84.14.8	A	c-68-84-14-8.hsd1.md.comcast.net
68.84.15.127	A	mail.delcoirishfest.com
68.84.15.127	A	mail.irishamericanfilms.com
68.84.15.182	A	c-68-84-15-182.hsd1.md.comcast.net
68.84.15.209	A+PTR	c-68-84-15-209.hsd1.md.comcast.net
68.84.15.217	A	c-68-84-15-217.hsd1.md.comcast.net
68.84.15.242	A+PTR	c-68-84-15-242.hsd1.md.comcast.net