Robtex

Up: 77.121.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.121.13.0/25
Down right: 77.121.13.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.121.13.1	PTR	mail.kir.volia.net
77.121.13.1	A	relay.romb.net
77.121.13.1	A	mail.romb.net
77.121.13.5	A	pppoe-nas.romb.net
77.121.13.6	A+PTR	ns1-pi.kir.volia.net
77.121.13.6	A	ns1-pi.romb.net
77.121.13.6	A	romb.net
77.121.13.8	A+PTR	hosting.kir.volia.net
77.121.13.8	A	colocall.romb.net
77.121.13.8	A	hosting.romb.net
77.121.13.10	A	pegas.romb.net
77.121.13.12	A+PTR	free12.kir.volia.net
77.121.13.14	A+PTR	andy.romb.net
77.121.13.27	A	admin.romb.net
77.121.13.29	PTR	gnom-1.kgrad.volia.net
77.121.13.29	A	kir.volia.net
77.121.13.46	PTR	ip.77.121.13.46.kir.volia.net
77.121.13.75	A	entranced-telephone.volia.net
77.121.13.80	PTR	ip-77-121-13-80.romb.net
77.121.13.153	PTR	ip.77.121.13.153.kir.volia.net
77.121.13.172	PTR	ip.77.121.13.172.kir.volia.net
77.121.13.182	PTR	ip.77.121.13.182.kir.volia.net
77.121.13.255	PTR	ip-77-121-13-255.romb.net