Robtex

Up: 27.51.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 27.51.88.0/22
Down right: 27.51.92.0/22

IP	Type	Hostname
27.51.90.117	A	27-51-90-117.adsl.fetnet.net
27.51.90.134	A	27-51-90-134.adsl.fetnet.net
27.51.90.147	A+PTR	27-51-90-147.adsl.fetnet.net
27.51.90.177	A+PTR	27-51-90-177.adsl.fetnet.net
27.51.94.83	A+PTR	27-51-94-83.adsl.fetnet.net
27.51.94.91	A+PTR	27-51-94-91.adsl.fetnet.net
27.51.94.105	A+PTR	27-51-94-105.adsl.fetnet.net
27.51.95.98	A+PTR	27-51-95-98.adsl.fetnet.net
27.51.95.155	A+PTR	27-51-95-155.adsl.fetnet.net
27.51.95.173	A+PTR	27-51-95-173.adsl.fetnet.net