Robtex

Up: 116.50.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 116.50.140.0/23
Down right: 116.50.142.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
116.50.140.15	PTR	15.140.50.116.unassigned.static.poi.network
116.50.140.17	PTR	17.140.50.116.unassigned.static.poi.network
116.50.140.19	PTR	19.140.50.116.unassigned.static.poi.network
116.50.140.33	PTR	33.140.50.116.unassigned.static.poi.network
116.50.140.44	PTR	44.140.50.116.unassigned.static.poi.network
116.50.140.46	PTR	46.140.50.116.unassigned.static.poi.network
116.50.140.54	PTR	54.140.50.116.unassigned.static.poi.network
116.50.140.64	PTR	64.140.50.116.unassigned.static.poi.network
116.50.140.72	PTR	72.140.50.116.unassigned.static.poi.network
116.50.140.84	PTR	84.140.50.116.unassigned.static.poi.network
116.50.140.87	PTR	87.140.50.116.unassigned.static.poi.network
116.50.140.92	PTR	92.140.50.116.unassigned.static.poi.network
116.50.140.94	PTR	94.140.50.116.unassigned.static.poi.network
116.50.140.97	PTR	97.140.50.116.unassigned.static.poi.network
116.50.140.99	PTR	99.140.50.116.unassigned.static.poi.network
116.50.140.102	PTR	102.140.50.116.unassigned.static.poi.network
116.50.140.127	PTR	127.140.50.116.unassigned.static.poi.network
116.50.140.130	PTR	130.140.50.116.unassigned.static.poi.network
116.50.140.144	PTR	144.140.50.116.unassigned.static.poi.network
116.50.140.150	PTR	150.140.50.116.unassigned.static.poi.network
116.50.140.166	PTR	166.140.50.116.unassigned.static.poi.network
116.50.140.186	PTR	186.140.50.116.unassigned.static.poi.network
116.50.140.195	PTR	195.140.50.116.unassigned.static.poi.network
116.50.140.199	PTR	199.140.50.116.unassigned.static.poi.network
116.50.140.203	PTR	203.140.50.116.unassigned.static.poi.network
116.50.140.212	PTR	212.140.50.116.unassigned.static.poi.network
116.50.140.223	PTR	223.140.50.116.unassigned.static.poi.network
116.50.140.233	PTR	233.140.50.116.unassigned.static.poi.network
116.50.140.237	PTR	237.140.50.116.unassigned.static.poi.network
116.50.140.247	PTR	247.140.50.116.unassigned.static.poi.network
116.50.141.83	PTR	83.141.50.116.unassigned.static.poi.network
116.50.141.130	PTR	130.141.50.116.unassigned.static.poi.network
116.50.141.196	PTR	196.141.50.116.unassigned.static.poi.network
116.50.142.18	PTR	18.142.50.116.unassigned.static.poi.network
116.50.142.42	PTR	42.142.50.116.unassigned.static.poi.network
116.50.142.46	PTR	46.142.50.116.unassigned.static.poi.network
116.50.142.64	PTR	64.142.50.116.unassigned.static.poi.network
116.50.142.77	PTR	77.142.50.116.unassigned.static.poi.network
116.50.142.81	PTR	81.142.50.116.unassigned.static.poi.network
116.50.142.86	PTR	86.142.50.116.unassigned.static.poi.network
116.50.142.93	PTR	93.142.50.116.unassigned.static.poi.network
116.50.142.95	PTR	95.142.50.116.unassigned.static.poi.network
116.50.142.114	PTR	114.142.50.116.unassigned.static.poi.network
116.50.142.123	PTR	123.142.50.116.unassigned.static.poi.network
116.50.142.124	PTR	124.142.50.116.unassigned.static.poi.network
116.50.142.132	PTR	132.142.50.116.unassigned.static.poi.network
116.50.142.132	A	smtp.muramatsu-group.net
116.50.142.133	PTR	133.142.50.116.unassigned.static.poi.network
116.50.142.133	A	smtp.rbmfoundation.info
116.50.142.133	A	mail.hrj.com.ph
116.50.142.134	PTR	134.142.50.116.unassigned.static.poi.network
116.50.142.134	A	webmail.w-smile.net
116.50.142.135	PTR	135.142.50.116.unassigned.static.poi.network
116.50.142.136	PTR	136.142.50.116.unassigned.static.poi.network
116.50.142.136	A	webmail.imt.sc
116.50.142.137	PTR	137.142.50.116.unassigned.static.poi.network
116.50.142.139	PTR	139.142.50.116.unassigned.static.poi.network
116.50.142.151	PTR	151.142.50.116.unassigned.static.poi.network
116.50.142.178	PTR	178.142.50.116.unassigned.static.poi.network
116.50.142.183	PTR	183.142.50.116.unassigned.static.poi.network
116.50.142.192	PTR	192.142.50.116.unassigned.static.poi.network
116.50.142.208	PTR	208.142.50.116.unassigned.static.poi.network
116.50.142.209	PTR	209.142.50.116.unassigned.static.poi.network
116.50.142.213	PTR	213.142.50.116.unassigned.static.poi.network
116.50.142.221	PTR	221.142.50.116.unassigned.static.poi.network
116.50.142.225	PTR	225.142.50.116.unassigned.static.poi.network
116.50.142.227	PTR	227.142.50.116.unassigned.static.poi.network
116.50.142.237	PTR	237.142.50.116.unassigned.static.poi.network
116.50.142.238	PTR	238.142.50.116.unassigned.static.poi.network
116.50.142.241	PTR	241.142.50.116.unassigned.static.poi.network
116.50.143.51	PTR	51.143.50.116.ids.service.eastern-tele.com
116.50.143.51	A	life-log.biz
116.50.143.52	PTR	52.143.50.116.ids.service.eastern-tele.com
116.50.143.52	A	set-af.net
116.50.143.52	A	0109900.com
116.50.143.180	PTR	180.143.50.116.ids.service.eastern-tele.com
116.50.143.251	PTR	251.143.50.116.ids.service.eastern-tele.com