Robtex

Up: 68.64.10.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 68.64.11.0/25
Down right: 68.64.11.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.64.11.7	A+PTR	mcs4-1-isp1.las.expertcity.com
68.64.11.8	A+PTR	mcs5-1-isp1.las.expertcity.com
68.64.11.9	A+PTR	mcs6-1-isp1.las.expertcity.com
68.64.11.10	A+PTR	mcs7-1-isp1.las.expertcity.com
68.64.11.11	A+PTR	mcs8-1-isp1.las.expertcity.com
68.64.11.12	PTR	mcs9-1-isp1.las.expertcity.com
68.64.11.13	A+PTR	mcs10-1-isp1.las.expertcity.com
68.64.11.14	A+PTR	mcs11-1-isp1.las.expertcity.com
68.64.11.15	A+PTR	mcs12-1-isp1.las.expertcity.com
68.64.11.16	A+PTR	mcs4-2-isp1.las.expertcity.com
68.64.11.17	A+PTR	mcs5-2-isp1.las.expertcity.com
68.64.11.18	A+PTR	mcs6-2-isp1.las.expertcity.com
68.64.11.19	A+PTR	mcs7-2-isp1.las.expertcity.com
68.64.11.20	A+PTR	mcs8-2-isp1.las.expertcity.com
68.64.11.21	A+PTR	mcs9-2-isp1.las.expertcity.com
68.64.11.22	A+PTR	mcs10-2-isp1.las.expertcity.com
68.64.11.23	A+PTR	mcs11-2-isp1.las.expertcity.com
68.64.11.24	A+PTR	mcs12-2-isp1.las.expertcity.com
68.64.11.25	PTR	mcs4-3-isp1.las.expertcity.com
68.64.11.26	A+PTR	mcs5-3-isp1.las.expertcity.com
68.64.11.27	PTR	68-64-11-27.expertcity.com
68.64.11.27	PTR	mcs6-3-isp1.las.expertcity.com
68.64.11.27	A	openvoice.ch
68.64.11.28	A+PTR	mcs7-3-isp1.las.expertcity.com
68.64.11.29	A+PTR	mcs8-3-isp1.las.expertcity.com
68.64.11.30	PTR	report.hidefcorporate.com
68.64.11.30	A	mcs9-3-isp1.las.expertcity.com
68.64.11.31	A+PTR	mcs10-3-isp1.las.expertcity.com
68.64.11.32	A+PTR	mcs11-3-isp1.las.expertcity.com
68.64.11.33	A+PTR	mcs12-3-isp1.las.expertcity.com
68.64.11.34	A+PTR	mcs4-4-isp1.las.expertcity.com
68.64.11.35	A+PTR	mcs5-4-isp1.las.expertcity.com
68.64.11.36	A+PTR	mcs6-4-isp1.las.expertcity.com
68.64.11.37	A+PTR	mcs7-4-isp1.las.expertcity.com
68.64.11.38	A+PTR	mcs8-4-isp1.las.expertcity.com
68.64.11.39	A+PTR	mcs9-4-isp1.las.expertcity.com
68.64.11.40	PTR	mcs10-4-isp1.las.expertcity.com
68.64.11.41	A+PTR	mcs11-4-isp1.las.expertcity.com
68.64.11.42	A+PTR	mcs12-4-isp1.las.expertcity.com
68.64.11.43	A+PTR	mcs4-5-isp1.las.expertcity.com
68.64.11.44	A+PTR	mcs5-5-isp1.las.expertcity.com
68.64.11.45	A+PTR	mcs6-5-isp1.las.expertcity.com
68.64.11.46	A+PTR	mcs7-5-isp1.las.expertcity.com
68.64.11.47	A+PTR	mcs8-5-isp1.las.expertcity.com
68.64.11.48	A+PTR	mcs9-5-isp1.las.expertcity.com
68.64.11.49	A+PTR	mcs10-5-isp1.las.expertcity.com
68.64.11.50	A+PTR	mcs11-5-isp1.las.expertcity.com
68.64.11.51	A+PTR	mcs12-5-isp1.las.expertcity.com