Robtex

Up: 101.53.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 101.53.32.0/20
Down right: 101.53.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
101.53.32.34	PTR	ci53.32-34.netnam.vn
101.53.32.65	PTR	ci53.32-65.netnam.vn
101.53.32.97	PTR	ci53.32-97.netnam.vn
101.53.32.98	PTR	ci53.32-98.netnam.vn
101.53.32.161	PTR	ci53.32-161.netnam.vn
101.53.32.192	PTR	ci53.32-192.netnam.vn
101.53.32.226	PTR	ci53.32-226.netnam.vn
101.53.33.35	PTR	ci53.33-35.netnam.vn
101.53.35.2	PTR	ci53.35-2.netnam.vn
101.53.36.3	PTR	ci53.36-3.netnam.vn
101.53.36.33	PTR	ci53.36-33.netnam.vn
101.53.36.64	PTR	ci53.36-64.netnam.vn
101.53.36.131	PTR	ci53.36-131.netnam.vn
101.53.36.163	PTR	ci53.36-163.netnam.vn
101.53.36.194	PTR	ci53.36-194.netnam.vn
101.53.37.1	PTR	ci53.37-1.netnam.vn
101.53.37.4	PTR	ci53.37-4.netnam.vn
101.53.37.33	PTR	ci53.37-33.netnam.vn
101.53.37.96	PTR	ci53.37-96.netnam.vn
101.53.37.97	PTR	ci53.37-97.netnam.vn
101.53.37.98	PTR	ci53.37-98.netnam.vn
101.53.37.128	PTR	ci53.37-128.netnam.vn
101.53.37.129	PTR	ci53.37-129.netnam.vn
101.53.37.162	PTR	ci53.37-162.netnam.vn
101.53.37.225	PTR	ci53.37-225.netnam.vn
101.53.37.226	PTR	ci53.37-226.netnam.vn
101.53.37.228	A	mail.cucthuetphcm.com.vn
101.53.37.228	A	cucthuetphcm.com.vn
101.53.39.1	PTR	ci53.39-1.netnam.vn
101.53.39.194	PTR	ci53.39-194.netnam.vn
101.53.41.2	PTR	ci53.41-2.netnam.vn
101.53.41.32	PTR	ci53.41-32.netnam.vn
101.53.41.34	PTR	ci53.41-34.netnam.vn
101.53.41.64	PTR	ci53.41-64.netnam.vn
101.53.41.67	PTR	ci53.41-67.netnam.vn
101.53.41.97	PTR	ci53.41-97.netnam.vn
101.53.41.98	PTR	ci53.41-98.netnam.vn
101.53.41.99	PTR	ci53.41-99.netnam.vn
101.53.41.130	PTR	ci53.41-130.netnam.vn
101.53.41.131	PTR	ci53.41-131.netnam.vn
101.53.41.160	PTR	ci53.41-160.netnam.vn
101.53.41.161	PTR	ci53.41-161.netnam.vn
101.53.41.163	PTR	ci53.41-163.netnam.vn
101.53.41.195	PTR	ci53.41-195.netnam.vn
101.53.41.226	PTR	ci53.41-226.netnam.vn
101.53.41.227	PTR	ci53.41-227.netnam.vn
101.53.42.1	PTR	ci53.42-1.netnam.vn
101.53.42.3	PTR	ci53.42-3.netnam.vn
101.53.42.32	PTR	ci53.42-32.netnam.vn
101.53.42.34	PTR	ci53.42-34.netnam.vn
101.53.42.35	PTR	ci53.42-35.netnam.vn
101.53.42.65	PTR	ci53.42-65.netnam.vn
101.53.42.66	PTR	ci53.42-66.netnam.vn
101.53.42.98	PTR	ci53.42-98.netnam.vn
101.53.42.99	PTR	ci53.42-99.netnam.vn
101.53.42.129	PTR	ci53.42-129.netnam.vn
101.53.42.193	PTR	ci53.42-193.netnam.vn
101.53.42.194	PTR	ci53.42-194.netnam.vn
101.53.42.195	PTR	ci53.42-195.netnam.vn
101.53.42.225	PTR	ci53.42-225.netnam.vn
101.53.45.32	PTR	ci53.45-32.netnam.vn
101.53.45.34	PTR	ci53.45-34.netnam.vn
101.53.45.65	PTR	ci53.45-65.netnam.vn
101.53.45.67	PTR	ci53.45-67.netnam.vn
101.53.45.96	PTR	ci53.45-96.netnam.vn
101.53.45.97	PTR	ci53.45-97.netnam.vn
101.53.45.128	PTR	ci53.45-128.netnam.vn
101.53.45.129	PTR	ci53.45-129.netnam.vn
101.53.45.162	PTR	ci53.45-162.netnam.vn
101.53.45.193	PTR	ci53.45-193.netnam.vn
101.53.45.194	PTR	ci53.45-194.netnam.vn
101.53.45.195	PTR	ci53.45-195.netnam.vn
101.53.46.1	PTR	ci53.46-1.netnam.vn
101.53.46.35	PTR	ci53.46-35.netnam.vn
101.53.46.66	PTR	ci53.46-66.netnam.vn
101.53.46.67	PTR	ci53.46-67.netnam.vn
101.53.46.99	PTR	ci53.46-99.netnam.vn
101.53.46.129	PTR	ci53.46-129.netnam.vn
101.53.46.162	PTR	ci53.46-162.netnam.vn
101.53.46.193	PTR	ci53.46-193.netnam.vn
101.53.46.227	PTR	ci53.46-227.netnam.vn
101.53.55.3	PTR	ci53.55-3.netnam.vn
101.53.55.167	PTR	ci53.55-167.netnam.vn
101.53.55.174	PTR	ci53.55-174.netnam.vn
101.53.55.192	PTR	ci53.55-192.netnam.vn
101.53.56.97	PTR	ci53.56-97.netnam.vn
101.53.56.131	PTR	ci53.56-131.netnam.vn
101.53.56.195	PTR	ci53.56-195.netnam.vn
101.53.56.224	PTR	ci53.56-224.netnam.vn
101.53.57.38	PTR	ci53.57-38.netnam.vn
101.53.57.55	PTR	ci53.57-55.netnam.vn
101.53.57.132	PTR	ci53.57-132.netnam.vn
101.53.57.136	PTR	ci53.57-136.netnam.vn
101.53.57.176	PTR	ci53.57-176.netnam.vn
101.53.57.230	PTR	ci53.57-230.netnam.vn
101.53.57.233	PTR	ci53.57-233.netnam.vn
101.53.58.12	PTR	ci53.58-12.netnam.vn
101.53.58.12	A	r1.sn-oxuo5h-nboe.gvt1.com
101.53.58.12	A	r1.sn-oxuo5h-nboe.googlevideo.com
101.53.58.13	PTR	ci53.58-13.netnam.vn
101.53.58.13	A	r2.sn-oxuo5h-nboe.googlevideo.com
101.53.58.13	A	r2.sn-oxuo5h-nboe.gvt1.com
101.53.58.14	PTR	ci53.58-14.netnam.vn
101.53.62.18	PTR	ci53.62-18.netnam.vn
101.53.62.18	A	htv4.com.vn
101.53.62.18	A	htv.com.vn
101.53.62.22	PTR	ci53.62-22.netnam.vn
101.53.62.22	A	htv.com.vn
101.53.62.22	A	www.htv.com.vn
101.53.62.26	PTR	ci53.62-26.netnam.vn
101.53.62.138	A	bbb-nb2.conghoctap.com
101.53.62.142	A	bbb-lb.conghoctap.com
101.53.62.154	PTR	ci53.62-154.netnam.vn
101.53.62.154	A	ws.shub.edu.vn
101.53.63.2	PTR	ci53.63-2.netnam.vn
101.53.63.3	PTR	ci53.63-3.netnam.vn
101.53.63.32	PTR	ci53.63-32.netnam.vn
101.53.63.34	PTR	ci53.63-34.netnam.vn
101.53.63.64	PTR	ci53.63-64.netnam.vn
101.53.63.99	PTR	ci53.63-99.netnam.vn
101.53.63.128	PTR	ci53.63-128.netnam.vn
101.53.63.192	PTR	ci53.63-192.netnam.vn
101.53.63.224	PTR	ci53.63-224.netnam.vn
101.53.63.227	PTR	ci53.63-227.netnam.vn