Robtex

Up: 77.81.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.81.1.0/25
Down right: 77.81.1.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.81.1.10	PTR	daniel.southernspree.com
77.81.1.10	A	bronet.ro
77.81.1.10	A	mail.bronet.ro
77.81.1.11	A	voip-romania.com
77.81.1.11	A	mail.requiem.ro
77.81.1.11	A	mail.kreatis.ro
77.81.1.21	A	mail.teotrans.ro
77.81.1.21	A	teotrans.ro