Robtex

Up: 128.0.28.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 128.0.28.0/24
Down right: 128.0.29.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
128.0.28.0	PTR	0.28.0.128.sta.211.ru
128.0.28.2	PTR	2.28.0.128.sta.211.ru
128.0.28.4	PTR	4.28.0.128.sta.211.ru
128.0.28.5	PTR	5.28.0.128.sta.211.ru
128.0.28.10	PTR	10.28.0.128.sta.211.ru
128.0.28.11	PTR	11.28.0.128.sta.211.ru
128.0.28.28	PTR	28.28.0.128.sta.211.ru
128.0.28.38	PTR	38.28.0.128.sta.211.ru
128.0.28.42	PTR	42.28.0.128.sta.211.ru
128.0.28.45	PTR	45.28.0.128.sta.211.ru
128.0.28.54	PTR	54.28.0.128.sta.211.ru
128.0.28.63	PTR	63.28.0.128.sta.211.ru
128.0.28.69	PTR	69.28.0.128.sta.211.ru
128.0.28.81	PTR	81.28.0.128.sta.211.ru
128.0.28.88	PTR	88.28.0.128.sta.211.ru
128.0.28.92	PTR	92.28.0.128.sta.211.ru
128.0.28.93	PTR	93.28.0.128.sta.211.ru
128.0.28.100	PTR	100.28.0.128.sta.211.ru
128.0.28.107	PTR	107.28.0.128.sta.211.ru
128.0.28.108	PTR	108.28.0.128.sta.211.ru
128.0.28.113	PTR	113.28.0.128.sta.211.ru
128.0.28.117	PTR	117.28.0.128.sta.211.ru
128.0.28.121	PTR	121.28.0.128.sta.211.ru
128.0.28.131	PTR	131.28.0.128.sta.211.ru
128.0.28.134	PTR	134.28.0.128.sta.211.ru
128.0.28.137	PTR	137.28.0.128.sta.211.ru
128.0.28.143	PTR	143.28.0.128.sta.211.ru
128.0.28.155	PTR	155.28.0.128.sta.211.ru
128.0.28.164	PTR	164.28.0.128.sta.211.ru
128.0.28.176	PTR	176.28.0.128.sta.211.ru
128.0.28.177	PTR	177.28.0.128.sta.211.ru
128.0.28.187	PTR	187.28.0.128.sta.211.ru
128.0.28.188	PTR	188.28.0.128.sta.211.ru
128.0.28.189	PTR	189.28.0.128.sta.211.ru
128.0.28.191	PTR	191.28.0.128.sta.211.ru
128.0.28.194	PTR	194.28.0.128.sta.211.ru
128.0.28.199	PTR	199.28.0.128.sta.211.ru
128.0.28.204	PTR	204.28.0.128.sta.211.ru
128.0.28.206	PTR	206.28.0.128.sta.211.ru
128.0.28.209	PTR	209.28.0.128.sta.211.ru
128.0.28.211	PTR	211.28.0.128.sta.211.ru
128.0.28.215	PTR	215.28.0.128.sta.211.ru
128.0.28.223	PTR	223.28.0.128.sta.211.ru
128.0.28.243	PTR	243.28.0.128.sta.211.ru
128.0.28.244	PTR	244.28.0.128.sta.211.ru
128.0.29.0	PTR	0.29.0.128.sta.211.ru
128.0.29.4	PTR	4.29.0.128.sta.211.ru
128.0.29.7	PTR	7.29.0.128.sta.211.ru
128.0.29.8	PTR	8.29.0.128.sta.211.ru
128.0.29.9	PTR	9.29.0.128.sta.211.ru
128.0.29.14	PTR	14.29.0.128.sta.211.ru
128.0.29.15	PTR	15.29.0.128.sta.211.ru
128.0.29.23	PTR	23.29.0.128.sta.211.ru
128.0.29.28	PTR	28.29.0.128.sta.211.ru
128.0.29.30	PTR	30.29.0.128.sta.211.ru
128.0.29.31	PTR	31.29.0.128.sta.211.ru
128.0.29.33	PTR	33.29.0.128.sta.211.ru
128.0.29.35	PTR	35.29.0.128.sta.211.ru
128.0.29.36	PTR	36.29.0.128.sta.211.ru
128.0.29.50	PTR	50.29.0.128.sta.211.ru
128.0.29.52	PTR	52.29.0.128.sta.211.ru
128.0.29.54	PTR	54.29.0.128.sta.211.ru
128.0.29.56	PTR	56.29.0.128.sta.211.ru
128.0.29.59	PTR	59.29.0.128.sta.211.ru
128.0.29.61	PTR	61.29.0.128.sta.211.ru
128.0.29.62	PTR	62.29.0.128.sta.211.ru
128.0.29.63	PTR	63.29.0.128.sta.211.ru
128.0.29.73	PTR	73.29.0.128.sta.211.ru
128.0.29.75	PTR	75.29.0.128.sta.211.ru
128.0.29.78	PTR	78.29.0.128.sta.211.ru
128.0.29.81	PTR	81.29.0.128.sta.211.ru
128.0.29.82	PTR	82.29.0.128.sta.211.ru
128.0.29.87	PTR	87.29.0.128.sta.211.ru
128.0.29.100	PTR	100.29.0.128.sta.211.ru
128.0.29.102	PTR	102.29.0.128.sta.211.ru
128.0.29.103	PTR	103.29.0.128.sta.211.ru
128.0.29.113	PTR	113.29.0.128.sta.211.ru
128.0.29.121	PTR	121.29.0.128.sta.211.ru
128.0.29.125	PTR	125.29.0.128.sta.211.ru
128.0.29.126	PTR	126.29.0.128.sta.211.ru
128.0.29.126	A	altai.info
128.0.29.126	A	ns1.intersv.ru
128.0.29.129	PTR	129.29.0.128.sta.211.ru
128.0.29.129	A	ns2.intersv.ru
128.0.29.147	PTR	147.29.0.128.sta.211.ru
128.0.29.152	PTR	152.29.0.128.sta.211.ru
128.0.29.155	PTR	155.29.0.128.sta.211.ru
128.0.29.162	PTR	162.29.0.128.sta.211.ru
128.0.29.172	PTR	172.29.0.128.sta.211.ru
128.0.29.198	PTR	198.29.0.128.sta.211.ru
128.0.29.241	PTR	241.29.0.128.sta.211.ru