Robtex

Up: 207.65.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 207.65.48.0/22
Down right: 207.65.52.0/22

IP	Type	Hostname
207.65.53.33	PTR	host33-53-65-207.isdn.net
207.65.53.35	PTR	host35-53-65-207.isdn.net
207.65.53.42	PTR	host42-53-65-207.isdn.net
207.65.53.59	PTR	host59-53-65-207.isdn.net
207.65.53.75	PTR	host75-53-65-207.isdn.net
207.65.53.81	PTR	host81-53-65-207.isdn.net
207.65.53.82	PTR	host82-53-65-207.isdn.net
207.65.53.90	PTR	host90-53-65-207.isdn.net
207.65.53.91	PTR	host91-53-65-207.isdn.net
207.65.53.96	PTR	host96-53-65-207.isdn.net
207.65.53.99	PTR	host99-53-65-207.isdn.net
207.65.53.105	PTR	host105-53-65-207.isdn.net
207.65.53.106	PTR	host106-53-65-207.isdn.net
207.65.53.112	PTR	host112-53-65-207.isdn.net
207.65.53.146	PTR	host146-53-65-207.isdn.net
207.65.53.168	PTR	host168-53-65-207.isdn.net
207.65.53.169	PTR	host169-53-65-207.isdn.net
207.65.53.171	PTR	host171-53-65-207.isdn.net
207.65.53.176	PTR	host176-53-65-207.isdn.net
207.65.53.177	PTR	host177-53-65-207.isdn.net
207.65.53.186	PTR	host186-53-65-207.isdn.net
207.65.53.201	PTR	host201-53-65-207.isdn.net
207.65.53.216	PTR	host216-53-65-207.isdn.net
207.65.53.217	PTR	host217-53-65-207.isdn.net
207.65.53.234	PTR	host234-53-65-207.isdn.net
207.65.53.235	PTR	host235-53-65-207.isdn.net
207.65.53.240	PTR	host240-53-65-207.isdn.net