Robtex

Up: 101.53.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 101.53.56.0/22
Down right: 101.53.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
101.53.56.8	PTR	ci53.56-8.netnam.vn
101.53.56.16	PTR	ci53.56-16.netnam.vn
101.53.56.72	PTR	ci53.56-72.netnam.vn
101.53.56.73	PTR	ci53.56-73.netnam.vn
101.53.56.83	PTR	ci53.56-83.netnam.vn
101.53.56.89	PTR	ci53.56-89.netnam.vn
101.53.56.97	PTR	ci53.56-97.netnam.vn
101.53.56.104	PTR	ci53.56-104.netnam.vn
101.53.56.131	PTR	ci53.56-131.netnam.vn
101.53.56.138	PTR	ci53.56-138.netnam.vn
101.53.56.169	PTR	ci53.56-169.netnam.vn
101.53.56.170	PTR	ci53.56-170.netnam.vn
101.53.56.185	PTR	ci53.56-185.netnam.vn
101.53.56.195	PTR	ci53.56-195.netnam.vn
101.53.56.201	PTR	ci53.56-201.netnam.vn
101.53.56.209	PTR	ci53.56-209.netnam.vn
101.53.56.211	PTR	ci53.56-211.netnam.vn
101.53.56.224	PTR	ci53.56-224.netnam.vn
101.53.56.235	PTR	ci53.56-235.netnam.vn
101.53.56.240	PTR	ci53.56-240.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
101.53.57.153	PTR	ci53.57-153.netnam.vn
101.53.57.176	PTR	ci53.57-176.netnam.vn
101.53.57.213	PTR	ci53.57-213.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
101.53.63.16	PTR	ci53.63-16.netnam.vn
101.53.63.18	PTR	ci53.63-18.netnam.vn
101.53.63.27	PTR	ci53.63-27.netnam.vn
101.53.63.32	PTR	ci53.63-32.netnam.vn
101.53.63.34	PTR	ci53.63-34.netnam.vn
101.53.63.41	PTR	ci53.63-41.netnam.vn
101.53.63.50	PTR	ci53.63-50.netnam.vn
101.53.63.64	PTR	ci53.63-64.netnam.vn
101.53.63.72	PTR	ci53.63-72.netnam.vn
101.53.63.74	PTR	ci53.63-74.netnam.vn
101.53.63.99	PTR	ci53.63-99.netnam.vn
101.53.63.104	PTR	ci53.63-104.netnam.vn
101.53.63.107	PTR	ci53.63-107.netnam.vn
101.53.63.112	PTR	ci53.63-112.netnam.vn
101.53.63.128	PTR	ci53.63-128.netnam.vn
101.53.63.136	PTR	ci53.63-136.netnam.vn
101.53.63.138	PTR	ci53.63-138.netnam.vn
101.53.63.139	PTR	ci53.63-139.netnam.vn
101.53.63.145	PTR	ci53.63-145.netnam.vn
101.53.63.147	PTR	ci53.63-147.netnam.vn
101.53.63.154	PTR	ci53.63-154.netnam.vn
101.53.63.168	PTR	ci53.63-168.netnam.vn
101.53.63.169	PTR	ci53.63-169.netnam.vn
101.53.63.170	PTR	ci53.63-170.netnam.vn
101.53.63.185	PTR	ci53.63-185.netnam.vn
101.53.63.192	PTR	ci53.63-192.netnam.vn
101.53.63.211	PTR	ci53.63-211.netnam.vn
101.53.63.218	PTR	ci53.63-218.netnam.vn
101.53.63.219	PTR	ci53.63-219.netnam.vn
101.53.63.224	PTR	ci53.63-224.netnam.vn
101.53.63.227	PTR	ci53.63-227.netnam.vn
101.53.63.240	PTR	ci53.63-240.netnam.vn
101.53.63.251	PTR	ci53.63-251.netnam.vn