Robtex

Up: 91.83.176.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.83.180.0/23
Down right: 91.83.182.0/23

IP	Type	Hostname
91.83.180.0	PTR	91.83.180.0.pool.invitel.hu
91.83.180.49	A+PTR	91.83.180.49.pool.invitel.hu
91.83.180.235	A	91.83.180.235.pool.invitel.hu
91.83.182.255	PTR	91.83.182.255.pool.invitel.hu
91.83.183.131	PTR	91.83.183.131.pool.invitel.hu