Robtex

Up: 209.55.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 209.55.72.0/23
Down right: 209.55.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
209.55.72.3	A+PTR	dsl-209-55-72-3.centex.net
209.55.72.7	A+PTR	dsl-209-55-72-7.centex.net
209.55.72.13	A+PTR	dsl-209-55-72-13.centex.net
209.55.72.19	A+PTR	dsl-209-55-72-19.centex.net
209.55.72.20	A+PTR	dsl-209-55-72-20.centex.net
209.55.72.22	A+PTR	dsl-209-55-72-22.centex.net
209.55.72.26	A+PTR	dsl-209-55-72-26.centex.net
209.55.72.29	A+PTR	dsl-209-55-72-29.centex.net
209.55.72.45	A+PTR	dsl-209-55-72-45.centex.net
209.55.72.54	A+PTR	dsl-209-55-72-54.centex.net
209.55.72.55	A+PTR	dsl-209-55-72-55.centex.net
209.55.72.59	A+PTR	linksys08079.centex.net
209.55.72.60	A+PTR	dsl-209-55-72-60.centex.net
209.55.72.62	A+PTR	dsl-209-55-72-62.centex.net
209.55.72.63	A+PTR	dsl-209-55-72-63.centex.net
209.55.72.64	A+PTR	dsl-209-55-72-64.centex.net
209.55.72.65	A+PTR	dsl-209-55-72-65.centex.net
209.55.72.72	A+PTR	dsl-209-55-72-72.centex.net
209.55.72.75	A+PTR	dsl-209-55-72-75.centex.net
209.55.72.78	A+PTR	dsl-209-55-72-78.centex.net
209.55.72.80	A+PTR	dsl-209-55-72-80.centex.net
209.55.72.81	A+PTR	dsl-209-55-72-81.centex.net
209.55.72.82	A+PTR	dsl-209-55-72-82.centex.net
209.55.72.84	A+PTR	dsl-209-55-72-84.centex.net
209.55.72.85	A+PTR	dsl-209-55-72-85.centex.net
209.55.72.90	PTR	ranchousg.centex.net
209.55.72.90	A	cisco11325.centex.net
209.55.72.94	A+PTR	dsl-209-55-72-94.centex.net
209.55.72.103	A+PTR	dsl-209-55-72-103.centex.net
209.55.72.106	A+PTR	dsl-209-55-72-106.centex.net
209.55.72.114	A+PTR	dsl-209-55-72-114.centex.net
209.55.72.116	PTR	dsl-209-55-72-116.centex.net
209.55.72.122	A+PTR	dsl-209-55-72-122.centex.net
209.55.72.125	A+PTR	lucas-pc.centex.net
209.55.72.128	A+PTR	dsl-209-55-72-128.centex.net
209.55.72.137	A+PTR	dsl-209-55-72-137.centex.net
209.55.72.143	A+PTR	dsl-209-55-72-143.centex.net
209.55.72.144	A+PTR	dsl-209-55-72-144.centex.net
209.55.72.145	A+PTR	end-ed708637234.centex.net
209.55.72.149	A+PTR	dsl-209-55-72-149.centex.net
209.55.72.152	A+PTR	dsl-209-55-72-152.centex.net
209.55.72.155	A+PTR	shady-shores-of-san-saba-e0553d68b510.centex.net
209.55.72.160	A+PTR	dsl-209-55-72-160.centex.net
209.55.72.161	A+PTR	dsl-209-55-72-161.centex.net
209.55.72.171	A+PTR	dsl-209-55-72-171.centex.net
209.55.72.172	A+PTR	dsl-209-55-72-172.centex.net
209.55.72.173	A+PTR	dsl-209-55-72-173.centex.net
209.55.72.183	A+PTR	dsl-209-55-72-183.centex.net
209.55.72.184	A+PTR	di-524.centex.net
209.55.72.187	A+PTR	dsl-209-55-72-187.centex.net
209.55.72.189	A+PTR	dsl-209-55-72-189.centex.net
209.55.72.194	A+PTR	dsl-209-55-72-194.centex.net
209.55.72.198	A+PTR	dsl-209-55-72-198.centex.net
209.55.72.199	A+PTR	dsl-209-55-72-199.centex.net
209.55.72.202	A+PTR	dsl-209-55-72-202.centex.net
209.55.72.203	A+PTR	dsl-209-55-72-203.centex.net
209.55.72.205	A+PTR	dsl-209-55-72-205.centex.net
209.55.72.206	PTR	dsl-209-55-72-206.centex.net
209.55.72.206	A	sansabalongdrive.info
209.55.72.206	A	txomega.org
209.55.72.207	PTR	rp614v2.centex.net
209.55.72.208	A+PTR	dsl-209-55-72-208.centex.net
209.55.72.211	A+PTR	dsl-209-55-72-211.centex.net
209.55.72.212	A+PTR	cisco32968.centex.net
209.55.72.222	A+PTR	dsl-209-55-72-222.centex.net
209.55.72.226	A+PTR	dsl-209-55-72-226.centex.net
209.55.72.227	A+PTR	dsl-209-55-72-227.centex.net
209.55.72.242	A+PTR	dsl-209-55-72-242.centex.net
209.55.72.250	A+PTR	dsl-209-55-72-250.centex.net
209.55.72.253	A+PTR	mcbride.centex.net
209.55.72.254	A+PTR	dsl-209-55-72-254.centex.net
209.55.73.115	A	dsl-209-55-73-115.centex.net
209.55.73.118	A+PTR	fiber-209-55-73-118.centex.net
209.55.73.118	A	dsl-209-55-73-118.centex.net
209.55.74.1	A+PTR	dsl-209-55-74-1.centex.net
209.55.74.2	A+PTR	dsl-209-55-74-2.centex.net
209.55.74.4	A+PTR	home-wifi.centex.net
209.55.74.13	A+PTR	dsl-209-55-74-13.centex.net
209.55.74.23	A+PTR	dsl-209-55-74-23.centex.net
209.55.74.27	A+PTR	dsl-209-55-74-27.centex.net
209.55.74.32	A+PTR	dsl-209-55-74-32.centex.net
209.55.74.33	A+PTR	dsl-209-55-74-33.centex.net
209.55.74.47	A+PTR	dsl-209-55-74-47.centex.net
209.55.74.48	A+PTR	dsl-209-55-74-48.centex.net
209.55.74.55	A+PTR	dsl-209-55-74-55.centex.net
209.55.74.56	A+PTR	dsl-209-55-74-56.centex.net
209.55.74.59	A+PTR	dsl-209-55-74-59.centex.net
209.55.74.67	A+PTR	dsl-209-55-74-67.centex.net
209.55.74.68	A+PTR	dsl-209-55-74-68.centex.net
209.55.74.73	A+PTR	dsl-209-55-74-73.centex.net
209.55.74.83	A+PTR	dsl-209-55-74-83.centex.net
209.55.74.89	A+PTR	dsl-209-55-74-89.centex.net
209.55.74.92	A+PTR	dsl-209-55-74-92.centex.net
209.55.74.97	A+PTR	dsl-209-55-74-97.centex.net
209.55.74.108	A+PTR	dsl-209-55-74-108.centex.net
209.55.74.116	A+PTR	dsl-209-55-74-116.centex.net
209.55.74.123	PTR	ayrmesh\032router.centex.net
209.55.74.124	A+PTR	bwrmcsansaba-dmvpn.centex.net
209.55.74.131	A+PTR	dsl-209-55-74-131.centex.net
209.55.74.132	A+PTR	russell-johnsons-time-capsule.centex.net
209.55.74.145	A+PTR	dsl-209-55-74-145.centex.net
209.55.74.150	A+PTR	dsl-209-55-74-150.centex.net
209.55.74.157	A+PTR	bob-pc.centex.net
209.55.74.163	A+PTR	dsl-209-55-74-163.centex.net
209.55.74.165	A+PTR	dsl-209-55-74-165.centex.net
209.55.74.166	A+PTR	dsl-209-55-74-166.centex.net
209.55.74.173	A	dsl-209-55-74-173.centex.net
209.55.74.174	A+PTR	dsl-209-55-74-174.centex.net
209.55.74.175	A+PTR	dsl-209-55-74-175.centex.net
209.55.74.178	A	dsl-209-55-74-178.centex.net
209.55.74.181	A+PTR	dsl-209-55-74-181.centex.net
209.55.74.186	A+PTR	dsl-209-55-74-186.centex.net
209.55.74.192	A+PTR	dsl-209-55-74-192.centex.net
209.55.74.193	A	dsl-209-55-74-193.centex.net
209.55.74.194	A+PTR	dsl-209-55-74-194.centex.net
209.55.74.197	A+PTR	dsl-209-55-74-197.centex.net
209.55.74.201	A+PTR	dsl-209-55-74-201.centex.net
209.55.74.206	A+PTR	dsl-209-55-74-206.centex.net
209.55.74.207	A+PTR	dsl-209-55-74-207.centex.net
209.55.74.211	A+PTR	dsl-209-55-74-211.centex.net
209.55.74.214	A+PTR	dsl-209-55-74-214.centex.net
209.55.74.219	A+PTR	dsl-209-55-74-219.centex.net
209.55.74.225	A+PTR	dsl-209-55-74-225.centex.net
209.55.74.237	A+PTR	dsl-209-55-74-237.centex.net
209.55.74.240	A+PTR	dsl-209-55-74-240.centex.net
209.55.74.241	A+PTR	dsl-209-55-74-241.centex.net
209.55.74.244	A+PTR	dsl-209-55-74-244.centex.net
209.55.74.245	A	pecanbbq.com
209.55.74.246	A+PTR	dsl-209-55-74-246.centex.net
209.55.74.247	A+PTR	dsl-209-55-74-247.centex.net
209.55.74.248	A+PTR	dsl-209-55-74-248.centex.net
209.55.75.45	A	dsl-209-55-75-45.centex.net
209.55.75.115	A+PTR	dsl-209-55-75-115.centex.net
209.55.75.191	A+PTR	dsl-209-55-75-191.centex.net
209.55.75.246	A+PTR	dsl-209-55-75-246.centex.net