Robtex

Up: 68.248.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 68.248.240.0/23
Down right: 68.248.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.248.241.5	A	mail.rbgeurope.de
68.248.241.5	A	mail.rpgglobal.com
68.248.241.5	A	mail.starz4u.com
68.248.241.25	PTR	68-248-241-25.rpgglobal.com
68.248.241.25	A	tetcomail.tetcoadvantage.com
68.248.241.25	A	rpgmail.rpgglobal.com
68.248.243.2	A+PTR	adsl-68-248-243-2.dsl.chcgil.ameritech.net
68.248.243.7	A+PTR	adsl-68-248-243-7.dsl.chcgil.ameritech.net
68.248.243.9	A+PTR	adsl-68-248-243-9.dsl.chcgil.ameritech.net
68.248.243.13	A+PTR	adsl-68-248-243-13.dsl.chcgil.ameritech.net
68.248.243.16	A+PTR	adsl-68-248-243-16.dsl.chcgil.ameritech.net
68.248.243.22	A+PTR	adsl-68-248-243-22.dsl.chcgil.ameritech.net
68.248.243.26	A+PTR	adsl-68-248-243-26.dsl.chcgil.ameritech.net
68.248.243.29	A+PTR	adsl-68-248-243-29.dsl.chcgil.ameritech.net
68.248.243.31	PTR	adsl-68-248-243-31.dsl.chcgil.ameritech.net
68.248.243.35	A+PTR	adsl-68-248-243-35.dsl.chcgil.ameritech.net
68.248.243.36	A+PTR	adsl-68-248-243-36.dsl.chcgil.ameritech.net
68.248.243.37	A+PTR	adsl-68-248-243-37.dsl.chcgil.ameritech.net
68.248.243.40	A+PTR	adsl-68-248-243-40.dsl.chcgil.ameritech.net
68.248.243.46	A+PTR	adsl-68-248-243-46.dsl.chcgil.ameritech.net
68.248.243.57	A+PTR	adsl-68-248-243-57.dsl.chcgil.ameritech.net
68.248.243.60	A+PTR	adsl-68-248-243-60.dsl.chcgil.ameritech.net
68.248.243.61	A+PTR	adsl-68-248-243-61.dsl.chcgil.ameritech.net
68.248.243.62	A+PTR	adsl-68-248-243-62.dsl.chcgil.ameritech.net
68.248.243.69	A+PTR	adsl-68-248-243-69.dsl.chcgil.ameritech.net
68.248.243.70	PTR	adsl-68-248-243-70.dsl.chcgil.ameritech.net
68.248.243.71	A+PTR	adsl-68-248-243-71.dsl.chcgil.ameritech.net
68.248.243.72	A+PTR	adsl-68-248-243-72.dsl.chcgil.ameritech.net
68.248.243.74	A+PTR	adsl-68-248-243-74.dsl.chcgil.ameritech.net
68.248.243.77	A+PTR	adsl-68-248-243-77.dsl.chcgil.ameritech.net
68.248.243.82	A+PTR	adsl-68-248-243-82.dsl.chcgil.ameritech.net
68.248.243.87	A+PTR	adsl-68-248-243-87.dsl.chcgil.ameritech.net
68.248.243.89	A+PTR	adsl-68-248-243-89.dsl.chcgil.ameritech.net
68.248.243.95	PTR	adsl-68-248-243-95.dsl.chcgil.ameritech.net
68.248.243.98	A+PTR	adsl-68-248-243-98.dsl.chcgil.ameritech.net
68.248.243.107	PTR	adsl-68-248-243-107.dsl.chcgil.ameritech.net
68.248.243.111	A+PTR	adsl-68-248-243-111.dsl.chcgil.ameritech.net
68.248.243.112	A+PTR	adsl-68-248-243-112.dsl.chcgil.ameritech.net
68.248.243.113	A+PTR	adsl-68-248-243-113.dsl.chcgil.ameritech.net
68.248.243.119	PTR	adsl-68-248-243-119.dsl.chcgil.ameritech.net
68.248.243.120	PTR	adsl-68-248-243-120.dsl.chcgil.ameritech.net
68.248.243.129	A+PTR	adsl-68-248-243-129.dsl.chcgil.ameritech.net
68.248.243.131	A+PTR	adsl-68-248-243-131.dsl.chcgil.ameritech.net
68.248.243.132	A+PTR	adsl-68-248-243-132.dsl.chcgil.ameritech.net
68.248.243.135	A+PTR	adsl-68-248-243-135.dsl.chcgil.ameritech.net
68.248.243.138	A+PTR	adsl-68-248-243-138.dsl.chcgil.ameritech.net
68.248.243.140	A+PTR	adsl-68-248-243-140.dsl.chcgil.ameritech.net
68.248.243.143	A+PTR	adsl-68-248-243-143.dsl.chcgil.ameritech.net
68.248.243.148	A+PTR	adsl-68-248-243-148.dsl.chcgil.ameritech.net
68.248.243.151	A	adsl-68-248-243-151.dsl.chcgil.ameritech.net
68.248.243.152	A+PTR	adsl-68-248-243-152.dsl.chcgil.ameritech.net
68.248.243.154	A+PTR	adsl-68-248-243-154.dsl.chcgil.ameritech.net
68.248.243.156	A+PTR	adsl-68-248-243-156.dsl.chcgil.ameritech.net
68.248.243.157	A+PTR	adsl-68-248-243-157.dsl.chcgil.ameritech.net
68.248.243.158	PTR	adsl-68-248-243-158.dsl.chcgil.ameritech.net
68.248.243.159	A+PTR	adsl-68-248-243-159.dsl.chcgil.ameritech.net
68.248.243.186	A+PTR	adsl-68-248-243-186.dsl.chcgil.ameritech.net
68.248.243.187	A+PTR	adsl-68-248-243-187.dsl.chcgil.ameritech.net
68.248.243.200	A+PTR	adsl-68-248-243-200.dsl.chcgil.ameritech.net
68.248.243.201	A+PTR	adsl-68-248-243-201.dsl.chcgil.ameritech.net
68.248.243.202	A+PTR	adsl-68-248-243-202.dsl.chcgil.ameritech.net
68.248.243.206	A+PTR	adsl-68-248-243-206.dsl.chcgil.ameritech.net
68.248.243.220	A+PTR	adsl-68-248-243-220.dsl.chcgil.ameritech.net
68.248.243.222	A+PTR	adsl-68-248-243-222.dsl.chcgil.ameritech.net
68.248.243.224	A+PTR	adsl-68-248-243-224.dsl.chcgil.ameritech.net
68.248.243.230	A+PTR	adsl-68-248-243-230.dsl.chcgil.ameritech.net
68.248.243.233	A+PTR	adsl-68-248-243-233.dsl.chcgil.ameritech.net
68.248.243.239	A+PTR	adsl-68-248-243-239.dsl.chcgil.ameritech.net
68.248.243.241	A	adsl-68-248-243-241.dsl.chcgil.ameritech.net
68.248.243.244	A+PTR	adsl-68-248-243-244.dsl.chcgil.ameritech.net
68.248.243.247	A+PTR	adsl-68-248-243-247.dsl.chcgil.ameritech.net
68.248.243.249	A+PTR	adsl-68-248-243-249.dsl.chcgil.ameritech.net