Robtex

Up: 66.253.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.253.40.0/23
Down right: 66.253.42.0/23

IP	Type	Hostname
66.253.40.35	PTR	mail.southridgetech.com
66.253.40.35	A	mail.hudsonbuilds.com
66.253.40.35	A	hudsonbuilds.com
66.253.40.38	A	flaghillllc.com
66.253.40.75	A+PTR	dsl253-040-075.nyc1.dsl.speakeasy.net
66.253.40.124	A+PTR	dsl253-040-124.nyc1.dsl.speakeasy.net
66.253.40.140	A+PTR	dsl253-040-140.nyc1.dsl.speakeasy.net
66.253.40.159	A+PTR	dsl253-040-159.nyc1.dsl.speakeasy.net
66.253.40.216	A+PTR	dsl253-040-216.nyc1.dsl.speakeasy.net
66.253.40.223	A+PTR	dsl253-040-223.nyc1.dsl.speakeasy.net
66.253.41.87	A+PTR	dsl253-041-087.nyc1.dsl.speakeasy.net
66.253.41.91	A+PTR	nymail.pfaw.org
66.253.41.165	PTR	dsl253-041-165.nyc1.dsl.speakeasy.net
66.253.41.165	A	mail.800carpets.com
66.253.41.165	A	mail.streamville.com
66.253.41.166	PTR	dsl253-041-166.nyc1.dsl.speakeasy.net
66.253.41.166	A	sdurbanretail.com
66.253.41.195	PTR	system1.tradingsystems.net
66.253.41.232	A+PTR	dsl253-041-232.nyc1.dsl.speakeasy.net
66.253.42.3	A	dsl253-042-003.nyc1.dsl.speakeasy.net
66.253.42.8	A	dsl253-042-008.nyc1.dsl.speakeasy.net
66.253.42.11	A	dsl253-042-011.nyc1.dsl.speakeasy.net
66.253.42.12	A	dsl253-042-012.nyc1.dsl.speakeasy.net
66.253.42.13	A	dsl253-042-013.nyc1.dsl.speakeasy.net
66.253.42.18	A	dsl253-042-018.nyc1.dsl.speakeasy.net
66.253.42.31	A	dsl253-042-031.nyc1.dsl.speakeasy.net
66.253.42.32	A	dsl253-042-032.nyc1.dsl.speakeasy.net
66.253.42.38	A	dsl253-042-038.nyc1.dsl.speakeasy.net
66.253.42.43	A	dsl253-042-043.nyc1.dsl.speakeasy.net
66.253.42.45	A	dsl253-042-045.nyc1.dsl.speakeasy.net
66.253.42.56	A	dsl253-042-056.nyc1.dsl.speakeasy.net
66.253.42.57	A	dsl253-042-057.nyc1.dsl.speakeasy.net
66.253.42.59	A	dsl253-042-059.nyc1.dsl.speakeasy.net
66.253.42.61	A	dsl253-042-061.nyc1.dsl.speakeasy.net
66.253.42.62	A	dsl253-042-062.nyc1.dsl.speakeasy.net
66.253.42.77	A	dsl253-042-077.nyc1.dsl.speakeasy.net
66.253.42.78	A	dsl253-042-078.nyc1.dsl.speakeasy.net
66.253.42.79	A	dsl253-042-079.nyc1.dsl.speakeasy.net
66.253.42.80	A	dsl253-042-080.nyc1.dsl.speakeasy.net
66.253.42.85	A	dsl253-042-085.nyc1.dsl.speakeasy.net
66.253.42.90	A	dsl253-042-090.nyc1.dsl.speakeasy.net
66.253.42.95	A	dsl253-042-095.nyc1.dsl.speakeasy.net
66.253.42.98	A	dsl253-042-098.nyc1.dsl.speakeasy.net
66.253.42.211	A	rocaton.com
66.253.43.11	A	mail.newrorad.com
66.253.43.221	PTR	lillap.com