Robtex

Up: 208.39.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 208.39.128.0/20
Down right: 208.39.144.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
208.39.128.0	A+PTR	208-39-128-0-static.hfc.comcastbusiness.net
208.39.129.204	A+PTR	208-39-129-204-static.hfc.comcastbusiness.net
208.39.129.204	A	cedarcreekpark.com
208.39.136.91	PTR	208-39-136-91.isp.comcastbusiness.net
208.39.136.91	A	www.pinehill.k12.nj.us
208.39.136.92	A+PTR	208-39-136-92.isp.comcastbusiness.net
208.39.136.176	A	nat-208-39-136-176.cinnaminson.com
208.39.137.2	A+PTR	208-39-137-2.isp.comcastbusiness.net
208.39.137.7	A	208-39-137-7.isp.comcastbusiness.net
208.39.137.16	A	208-39-137-16.isp.comcastbusiness.net
208.39.137.21	A	208-39-137-21.isp.comcastbusiness.net
208.39.137.36	A	208-39-137-36.isp.comcastbusiness.net
208.39.137.41	A	208-39-137-41.isp.comcastbusiness.net
208.39.137.46	A	208-39-137-46.isp.comcastbusiness.net
208.39.137.56	A	208-39-137-56.isp.comcastbusiness.net
208.39.137.66	A+PTR	208-39-137-66.isp.comcastbusiness.net
208.39.137.81	A	208-39-137-81.isp.comcastbusiness.net
208.39.137.90	A	208-39-137-90.isp.comcastbusiness.net
208.39.137.124	A	208-39-137-124.isp.comcastbusiness.net
208.39.137.137	A	208-39-137-137.isp.comcastbusiness.net
208.39.137.140	A	208-39-137-140.isp.comcastbusiness.net
208.39.137.155	A	208-39-137-155.isp.comcastbusiness.net
208.39.137.163	A+PTR	208-39-137-163.isp.comcastbusiness.net
208.39.137.168	A	208-39-137-168.isp.comcastbusiness.net
208.39.137.181	A	208-39-137-181.isp.comcastbusiness.net
208.39.137.185	A	208-39-137-185.isp.comcastbusiness.net
208.39.137.192	A+PTR	208-39-137-192.isp.comcastbusiness.net
208.39.137.197	A	208-39-137-197.isp.comcastbusiness.net
208.39.137.214	A	208-39-137-214.isp.comcastbusiness.net
208.39.137.237	A	208-39-137-237.isp.comcastbusiness.net
208.39.137.245	A	208-39-137-245.isp.comcastbusiness.net
208.39.137.247	A	208-39-137-247.isp.comcastbusiness.net
208.39.138.21	A+PTR	208-39-138-21.isp.comcastbusiness.net
208.39.138.21	A	chintsanhao.com.tw
208.39.140.1	A	ge-5-0-cr01.whm.comcastcommercial.net
208.39.140.41	PTR	ns3.comcastbusiness.net
208.39.140.42	A+PTR	ns.whm.comcastcommercial.net
208.39.140.43	PTR	ntp.whm.comcastcommercial.net
208.39.140.43	A+PTR	ntp03.comcastbusiness.net
208.39.140.77	A	at-8-0-0-2-br01.whm.comcastcommercial.net
208.39.140.109	A	vi-511-br01.whm.comcastcommercial.net
208.39.140.137	A+PTR	at-7-1-0-15-br01.whm.comcastcommercial.net
208.39.140.145	A	at-7-1-0-14-br01.whm.comcastcommercial.net
208.39.140.173	A+PTR	at-7-1-0-10-br01.whm.comcastcommercial.net
208.39.140.197	A+PTR	at-7-1-0-7-br01.whm.comcastcommercial.net
208.39.141.5	A	208-39-141-5.isp.comcastbusiness.net
208.39.141.60	A	208-39-141-60.isp.comcastbusiness.net
208.39.141.61	A	208-39-141-61.isp.comcastbusiness.net
208.39.141.67	PTR	mail.cgenterprises.biz
208.39.141.67	PTR	mail.cimarine.com
208.39.141.67	PTR	mail.ckconstructors.com
208.39.141.94	A	xanadu.evi-inc.com
208.39.141.195	A	208-39-141-195.isp.comcastbusiness.net
208.39.141.249	A	208-39-141-249.isp.comcastbusiness.net
208.39.142.2	A+PTR	208-39-142-2.isp.comcastbusiness.net
208.39.142.19	A	webmail.co.ho.md.us
208.39.142.28	A	208-39-142-28.isp.comcastbusiness.net
208.39.142.41	A+PTR	208-39-142-41.isp.comcastbusiness.net
208.39.142.54	A	208-39-142-54.isp.comcastbusiness.net
208.39.142.127	A	208-39-142-127.isp.comcastbusiness.net
208.39.142.128	PTR	208-39-142-128.isp.comcastbusiness.net
208.39.143.174	PTR	smtp1.cecil.edu
208.39.143.176	PTR	mail.cecil.edu
208.39.143.177	PTR	nename.cecil.edu
208.39.143.182	A	208-39-143-182-static.hfc.comcastbusiness.net
208.39.144.1	PTR	208-39-144-1.isp.comcastbusiness.net
208.39.144.3	A	208-39-144-3.isp.comcastbusiness.net
208.39.144.4	A	208-39-144-4.isp.comcastbusiness.net
208.39.144.5	A	208-39-144-5.isp.comcastbusiness.net
208.39.144.11	A	208-39-144-11.isp.comcastbusiness.net
208.39.144.33	A	208-39-144-33.isp.comcastbusiness.net
208.39.144.38	A	208-39-144-38.isp.comcastbusiness.net
208.39.144.39	A	208-39-144-39.isp.comcastbusiness.net
208.39.144.41	A	208-39-144-41.isp.comcastbusiness.net
208.39.144.66	A	208-39-144-66.isp.comcastbusiness.net
208.39.144.69	A	208-39-144-69.isp.comcastbusiness.net
208.39.144.71	A	208-39-144-71.isp.comcastbusiness.net
208.39.144.86	A	208-39-144-86.isp.comcastbusiness.net
208.39.144.98	PTR	mail.tektogo.com
208.39.144.98	A	chiinstitute.edu
208.39.144.98	A	chicareers.com
208.39.144.99	A	mail.chiinstitute.edu
208.39.144.102	A	208-39-144-102.isp.comcastbusiness.net
208.39.144.129	A	208-39-144-129.isp.comcastbusiness.net
208.39.144.130	A	208-39-144-130.isp.comcastbusiness.net
208.39.144.132	A	208-39-144-132.isp.comcastbusiness.net
208.39.144.136	A	208-39-144-136.isp.comcastbusiness.net
208.39.144.160	A	208-39-144-160.isp.comcastbusiness.net
208.39.144.162	A	208-39-144-162.isp.comcastbusiness.net
208.39.144.163	A	208-39-144-163.isp.comcastbusiness.net
208.39.144.164	A	208-39-144-164.isp.comcastbusiness.net
208.39.144.194	A	208-39-144-194.isp.comcastbusiness.net
208.39.144.197	A	208-39-144-197.isp.comcastbusiness.net
208.39.144.200	A	208-39-144-200.isp.comcastbusiness.net
208.39.144.202	A	208-39-144-202.isp.comcastbusiness.net
208.39.144.228	A	208-39-144-228.isp.comcastbusiness.net
208.39.144.232	A	208-39-144-232.isp.comcastbusiness.net
208.39.144.236	A	208-39-144-236.isp.comcastbusiness.net
208.39.144.240	A	208-39-144-240.isp.comcastbusiness.net
208.39.146.33	A+PTR	208-39-146-33.isp.comcastbusiness.net
208.39.151.138	PTR	sophosemail.centennialsd.org
208.39.152.20	A+PTR	208-39-152-20-static.hfc.comcastbusiness.net
208.39.153.7	A	comcasttechcenter.com
208.39.153.11	A	flyersalumni.com
208.39.153.35	A+PTR	oldphilly.comcastsportsnet.com
208.39.153.35	A+PTR	hughtube.tv
208.39.153.36	A	sacramento.comcastsportsnet.com
208.39.153.38	PTR	csnn.com
208.39.153.38	PTR	csnnw.com
208.39.153.38	PTR	csnnw.net
208.39.153.76	PTR	circusworksphilly.com
208.39.153.76	PTR	comcastspectacorfoundation.com
208.39.153.76	PTR	esyhf.com
208.39.153.82	PTR	sportsnetnewyork.com
208.39.153.82	PTR	sportsnetny.com
208.39.153.82	PTR	ftp.comcastsportsnet.com
208.39.153.243	PTR	smtp-out.comcast-spectacor.com
208.39.153.244	PTR	smtp-in.comcast-spectacor.com
208.39.153.244	PTR	spam.comcast-spectacor.com
208.39.156.98	A	208.39.156.98.biz.sta.comcastbusiness.net
208.39.156.102	PTR	208.39.156.102.biz.sta.comcastbusiness.net
208.39.156.146	A+PTR	208.39.156.146.biz.sta.comcastbusiness.net
208.39.157.2	PTR	208.39.157.2.biz.sta.comcastbusiness.net
208.39.157.4	A	208.39.157.4.biz.sta.comcastbusiness.net
208.39.157.14	A	208.39.157.14.biz.sta.comcastbusiness.net
208.39.157.16	A	208.39.157.16.biz.sta.comcastbusiness.net
208.39.157.19	A	208.39.157.19.biz.sta.comcastbusiness.net
208.39.157.35	A+PTR	208.39.157.35.biz.sta.comcastbusiness.net
208.39.157.36	A	208.39.157.36.biz.sta.comcastbusiness.net
208.39.157.44	A	208.39.157.44.biz.sta.comcastbusiness.net
208.39.157.47	A	208.39.157.47.biz.sta.comcastbusiness.net
208.39.157.65	PTR	ge-5-2-cr01.snj.comcastcommercial.net
208.39.157.66	PTR	ge-3-1-br01.snj.comcastcommercial.net
208.39.157.72	A	208.39.157.72.biz.sta.comcastbusiness.net
208.39.157.74	A	208.39.157.74.biz.sta.comcastbusiness.net
208.39.157.80	A	208.39.157.80.biz.sta.comcastbusiness.net
208.39.157.89	A	208.39.157.89.biz.sta.comcastbusiness.net
208.39.157.96	A+PTR	208.39.157.96.biz.sta.comcastbusiness.net
208.39.157.99	A+PTR	208.39.157.99.biz.sta.comcastbusiness.net
208.39.157.104	A	208.39.157.104.biz.sta.comcastbusiness.net
208.39.157.106	A	208.39.157.106.biz.sta.comcastbusiness.net
208.39.157.131	PTR	ge-1-0-0-br02.snj.comcastcommercial.net
208.39.157.133	A	208.39.157.133.biz.sta.comcastbusiness.net
208.39.157.140	A	208.39.157.140.biz.sta.comcastbusiness.net
208.39.157.151	A	208.39.157.151.biz.sta.comcastbusiness.net
208.39.157.154	A	208.39.157.154.biz.sta.comcastbusiness.net
208.39.157.160	A+PTR	208.39.157.160.biz.sta.comcastbusiness.net
208.39.157.166	A	208.39.157.166.biz.sta.comcastbusiness.net
208.39.157.171	A	208.39.157.171.biz.sta.comcastbusiness.net
208.39.157.172	A	208.39.157.172.biz.sta.comcastbusiness.net
208.39.157.195	A+PTR	208.39.157.195.biz.sta.comcastbusiness.net
208.39.157.196	A	208.39.157.196.biz.sta.comcastbusiness.net
208.39.157.204	A	208.39.157.204.biz.sta.comcastbusiness.net
208.39.157.223	A	208.39.157.223.biz.sta.comcastbusiness.net
208.39.157.231	A	208.39.157.231.biz.sta.comcastbusiness.net
208.39.157.232	A	208.39.157.232.biz.sta.comcastbusiness.net
208.39.157.238	A	208.39.157.238.biz.sta.comcastbusiness.net
208.39.157.246	A	208.39.157.246.biz.sta.comcastbusiness.net
208.39.158.1	PTR	ns1.comcastbusiness.net
208.39.158.2	PTR	ns.snj.comcastcommercial.net
208.39.158.2	A	dunn1878.com
208.39.158.3	A+PTR	ntp01.comcastbusiness.net
208.39.158.3	PTR	208-39-158-3.isp.comcastbusiness.net
208.39.158.3	PTR	ntp.snj.comcastcommercial.net
208.39.158.34	A+PTR	208-39-158-34.isp.comcastbusiness.net
208.39.158.43	A	208-39-158-43.isp.comcastbusiness.net
208.39.158.67	A+PTR	208-39-158-67.isp.comcastbusiness.net
208.39.158.69	A	mail.comcastnetworks.net
208.39.158.69	A	mail.comcastnetworks.com
208.39.158.75	A	208-39-158-75.isp.comcastbusiness.net
208.39.158.96	A	208-39-158-96.isp.comcastbusiness.net
208.39.158.99	A	208-39-158-99.isp.comcastbusiness.net
208.39.158.104	A	208-39-158-104.isp.comcastbusiness.net
208.39.158.105	A	208-39-158-105.isp.comcastbusiness.net
208.39.158.129	A	letterbox.mycomcast.com
208.39.158.130	PTR	comcasttel.com
208.39.158.130	PTR	broadbandcommuter.net
208.39.158.130	PTR	www.broadbandcommuter.net
208.39.158.131	A	208-39-158-131.isp.comcastbusiness.net
208.39.158.132	A	apps.comcastbusiness.com
208.39.158.132	A	208-39-158-132.isp.comcastbusiness.net
208.39.158.135	A	apps.comcastbusiness.com
208.39.158.165	A	208-39-158-165.isp.comcastbusiness.net
208.39.158.166	A	208-39-158-166.isp.comcastbusiness.net
208.39.158.171	A	208-39-158-171.isp.comcastbusiness.net
208.39.158.172	A	208-39-158-172.isp.comcastbusiness.net
208.39.158.196	A	208-39-158-196.isp.comcastbusiness.net
208.39.158.200	A	208-39-158-200.isp.comcastbusiness.net
208.39.158.202	A	208-39-158-202.isp.comcastbusiness.net
208.39.158.212	A	208-39-158-212.isp.comcastbusiness.net
208.39.158.230	A	208-39-158-230.isp.comcastbusiness.net
208.39.158.231	A	208-39-158-231.isp.comcastbusiness.net
208.39.158.232	A	208-39-158-232.isp.comcastbusiness.net
208.39.158.234	A	208-39-158-234.isp.comcastbusiness.net
208.39.159.34	A+PTR	208-39-159-34.isp.comcastbusiness.net