Robtex

Up: 77.91.72.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.91.73.0/25
Down right: 77.91.73.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.91.73.6	A	ns44.acerbach.us
77.91.73.8	A	ns45.acerbach.us
77.91.73.10	A+PTR	acerbach.us
77.91.73.14	PTR	77-91-73-14.telecomtune.com
77.91.73.20	A+PTR	pursuvision.net
77.91.73.26	PTR	77-91-73-26.rockstnx.com
77.91.73.33	A+PTR	exchange122.pursuvision.net
77.91.73.34	PTR	anonymous.prime-line.ru
77.91.73.34	A	advancraph.com
77.91.73.48	PTR	anonymous.prime-line.ru
77.91.73.48	A	direcrchive.com
77.91.73.62	A	superiomat.com
77.91.73.64	A+PTR	connect.superiomat.com
77.91.73.66	PTR	77-91-73-66.telecomtune.com
77.91.73.72	A	ns1.nomalign.com
77.91.73.72	A	ns2.nomalign.com
77.91.73.72	A	nomalign.com
77.91.73.74	PTR	77-91-73-74.rockstnx.com
77.91.73.76	A	stonccess.com
77.91.73.86	PTR	77-91-73-86.telecomtune.com
77.91.73.90	A	precisace.com
77.91.73.104	A+PTR	rainmavision.com
77.91.73.104	A	bookinman.com
77.91.73.108	A+PTR	msgin.rainmavision.com
77.91.73.118	A	orientgine.com
77.91.73.125	PTR	77-91-73-125.telecomtune.com
77.91.73.132	A	honeyourse.net
77.91.73.134	A+PTR	unconsible.us
77.91.73.134	A	frequill.com
77.91.73.134	A	ns2.frequill.com
77.91.73.137	PTR	77-91-73-137.umeriver.com
77.91.73.142	A+PTR	atl161.honeyourse.net
77.91.73.146	A	easyytime.com
77.91.73.165	A	lascists.com
77.91.73.165	A	ns1.lascists.com
77.91.73.165	A	ns2.lascists.com
77.91.73.173	PTR	77-91-73-173.telecomtune.com
77.91.73.188	A	exchanans.com
77.91.73.194	PTR	77-91-73-194.telecomtune.com
77.91.73.195	A	ns1.poleonar.com
77.91.73.195	A	ns2.poleonar.com
77.91.73.195	A	poleonar.com
77.91.73.202	A	pinpoest.com
77.91.73.209	PTR	anonymous.prime-line.ru
77.91.73.216	PTR	anonymous.prime-line.ru
77.91.73.216	A	heyebsite.com
77.91.73.230	PTR	anonymous.prime-line.ru
77.91.73.230	A	citadhoto.com
77.91.73.251	PTR	77-91-73-251.telecomtune.com