Robtex

Up: 78.159.140.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 78.159.141.0/25
Down right: 78.159.141.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.159.141.4	PTR	4-141-159.78.evro.net
78.159.141.10	PTR	10-141-159.78.evro.net
78.159.141.11	PTR	11-141-159.78.evro.net
78.159.141.14	PTR	14-141-159.78.evro.net
78.159.141.14	A	client-141-14.speedy-net.bg
78.159.141.15	PTR	15-141-159.78.evro.net
78.159.141.16	PTR	16-141-159.78.evro.net
78.159.141.23	PTR	23-141-159.78.evro.net
78.159.141.24	A	client-141-24.speedy-net.bg
78.159.141.31	PTR	31-141-159.78.evro.net
78.159.141.32	A+PTR	client-141-32.speedy-net.bg
78.159.141.35	PTR	35-141-159.78.evro.net
78.159.141.36	PTR	36-141-159.78.evro.net
78.159.141.39	A+PTR	client-141-39.speedy-net.bg
78.159.141.44	A	client-141-44.speedy-net.bg
78.159.141.47	A+PTR	client-141-47.speedy-net.bg
78.159.141.48	PTR	48-141-159.78.evro.net
78.159.141.54	A+PTR	client-141-54.speedy-net.bg
78.159.141.60	PTR	60-141-159.78.evro.net
78.159.141.62	A+PTR	client-141-62.speedy-net.bg
78.159.141.67	A+PTR	client-141-67.speedy-net.bg
78.159.141.69	PTR	69-141-159.78.evro.net
78.159.141.70	PTR	70-141-159.78.evro.net
78.159.141.75	A+PTR	client-141-75.speedy-net.bg
78.159.141.82	A	client-141-82.speedy-net.bg
78.159.141.84	A+PTR	client-141-84.speedy-net.bg
78.159.141.86	A+PTR	client-141-86.speedy-net.bg
78.159.141.89	A+PTR	client-141-89.speedy-net.bg
78.159.141.92	PTR	92-141-159.78.evro.net
78.159.141.92	A	client-141-92.speedy-net.bg
78.159.141.94	A+PTR	client-141-94.speedy-net.bg
78.159.141.95	PTR	95-141-159.78.evro.net
78.159.141.101	A+PTR	client-141-101.speedy-net.bg
78.159.141.110	PTR	110-141-159.78.evro.net
78.159.141.115	A+PTR	client-141-115.speedy-net.bg
78.159.141.118	PTR	118-141-159.78.evro.net
78.159.141.121	A	client-141-121.speedy-net.bg
78.159.141.125	A+PTR	client-141-125.speedy-net.bg
78.159.141.132	PTR	132-141-159.78.evro.net
78.159.141.133	PTR	133-141-159.78.evro.net
78.159.141.134	PTR	134-141-159.78.evro.net
78.159.141.139	PTR	139-141-159.78.evro.net
78.159.141.140	PTR	140-141-159.78.evro.net
78.159.141.140	A	client-141-140.speedy-net.bg
78.159.141.142	PTR	142-141-159.78.evro.net
78.159.141.144	A+PTR	client-141-144.speedy-net.bg
78.159.141.145	PTR	145-141-159.78.evro.net
78.159.141.149	PTR	149-141-159.78.evro.net
78.159.141.154	PTR	154-141-159.78.evro.net
78.159.141.155	PTR	155-141-159.78.evro.net
78.159.141.156	PTR	156-141-159.78.evro.net
78.159.141.160	PTR	160-141-159.78.evro.net
78.159.141.167	PTR	167-141-159.78.evro.net
78.159.141.171	PTR	171-141-159.78.evro.net
78.159.141.177	A+PTR	client-141-177.speedy-net.bg
78.159.141.178	PTR	178-141-159.78.evro.net
78.159.141.181	PTR	181-141-159.78.evro.net
78.159.141.182	PTR	182-141-159.78.evro.net
78.159.141.185	PTR	185-141-159.78.evro.net
78.159.141.186	PTR	186-141-159.78.evro.net
78.159.141.187	PTR	187-141-159.78.evro.net
78.159.141.188	PTR	188-141-159.78.evro.net
78.159.141.194	PTR	194-141-159.78.evro.net
78.159.141.196	PTR	196-141-159.78.evro.net
78.159.141.197	A+PTR	client-141-197.speedy-net.bg
78.159.141.202	PTR	202-141-159.78.evro.net
78.159.141.203	A+PTR	client-141-203.speedy-net.bg
78.159.141.204	PTR	client-141-204.speedy-net.bg
78.159.141.204	A	frode13371337.no-ip.biz
78.159.141.204	A	awesomedc.no-ip.biz
78.159.141.207	A	client-141-207.speedy-net.bg
78.159.141.209	A+PTR	client-141-209.speedy-net.bg
78.159.141.212	PTR	212-141-159.78.evro.net
78.159.141.213	PTR	213-141-159.78.evro.net
78.159.141.215	A	client-141-215.speedy-net.bg
78.159.141.218	PTR	218-141-159.78.evro.net
78.159.141.231	PTR	231-141-159.78.evro.net
78.159.141.235	PTR	235-141-159.78.evro.net
78.159.141.236	A+PTR	client-141-236.speedy-net.bg
78.159.141.237	A+PTR	client-141-237.speedy-net.bg
78.159.141.240	PTR	240-141-159.78.evro.net
78.159.141.252	A+PTR	client-141-252.speedy-net.bg