Robtex

Up: 209.122.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 209.122.16.0/21
Down right: 209.122.24.0/21

IP	Type	Hostname
209.122.16.1	PTR	bdl1.frm-ubr1.sbo-frm.ma.cable.rcn.net
209.122.24.217	A+PTR	adp01.erols.com
209.122.24.220	A	adp04.erols.com
209.122.24.221	A	adp05.erols.com
209.122.24.223	A	adp07.erols.com
209.122.29.208	PTR	host00.novabio.com