Robtex

Up: 67.38.128.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 67.38.128.0/23
Down right: 67.38.130.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
67.38.128.19	A+PTR	adsl-67-38-128-19.dsl.bltnin.ameritech.net
67.38.128.28	A+PTR	adsl-67-38-128-28.dsl.bltnin.ameritech.net
67.38.128.35	A+PTR	adsl-67-38-128-35.dsl.bltnin.ameritech.net
67.38.128.50	A+PTR	adsl-67-38-128-50.dsl.bltnin.ameritech.net
67.38.128.52	A+PTR	adsl-67-38-128-52.dsl.bltnin.ameritech.net
67.38.128.57	A+PTR	adsl-67-38-128-57.dsl.bltnin.ameritech.net
67.38.128.75	A+PTR	adsl-67-38-128-75.dsl.bltnin.ameritech.net
67.38.128.79	A+PTR	adsl-67-38-128-79.dsl.bltnin.ameritech.net
67.38.128.111	A+PTR	adsl-67-38-128-111.dsl.bltnin.ameritech.net
67.38.128.129	A+PTR	adsl-67-38-128-129.dsl.bltnin.ameritech.net
67.38.128.131	A+PTR	adsl-67-38-128-131.dsl.bltnin.ameritech.net
67.38.128.134	A+PTR	adsl-67-38-128-134.dsl.bltnin.ameritech.net
67.38.128.175	A+PTR	adsl-67-38-128-175.dsl.bltnin.ameritech.net
67.38.128.180	A+PTR	adsl-67-38-128-180.dsl.bltnin.ameritech.net
67.38.128.216	A+PTR	adsl-67-38-128-216.dsl.bltnin.ameritech.net
67.38.128.233	A+PTR	adsl-67-38-128-233.dsl.bltnin.ameritech.net
67.38.128.245	A+PTR	adsl-67-38-128-245.dsl.bltnin.ameritech.net
67.38.128.251	A+PTR	adsl-67-38-128-251.dsl.bltnin.ameritech.net
67.38.129.90	PTR	adsl-67-38-129-90.dsl.bltnin.ameritech.net
67.38.129.90	A	ns2.stinternet.com
67.38.129.90	A	mail.stinternet.com
67.38.129.93	PTR	adsl-67-38-129-93.dsl.bltnin.ameritech.net
67.38.129.93	A	bronzeheaven.com
67.38.129.93	A	ns.stinternet.com
67.38.131.116	A	67-38-131-116.ded.ameritech.net
67.38.131.117	A	67-38-131-117.ded.ameritech.net
67.38.131.120	A	67-38-131-120.ded.ameritech.net