Robtex

Up: 203.144.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 203.144.80.0/21
Down right: 203.144.88.0/21

IP	Type	Hostname
203.144.80.1	PTR	rtr.telesurf.com.kh
203.144.81.1	PTR	rtr.telesurf.com.kh
203.144.82.1	PTR	rtr.telesurf.com.kh
203.144.83.1	PTR	rtr.telesurf.com.kh
203.144.84.1	PTR	rtr.telesurf.com.kh
203.144.85.1	PTR	rtr.telesurf.com.kh
203.144.86.1	PTR	rtr.telesurf.com.kh
203.144.87.1	PTR	rtr.telesurf.com.kh
203.144.88.1	PTR	rtr.telesurf.com.kh
203.144.89.1	PTR	rtr.telesurf.com.kh
203.144.89.81	A	scontent.fpnh9-2.fna.fbcdn.net
203.144.89.82	A	video.fpnh9-2.fna.fbcdn.net
203.144.89.96	A	z-p3-scontent.fpnh9-2.fna.fbcdn.net
203.144.89.97	A	instagram.fpnh9-2.fna.fbcdn.net
203.144.89.98	A	media.fpnh9-2.fna.whatsapp.net
203.144.90.34	PTR	mx2.camgsm.com.kh
203.144.91.1	PTR	rtr.telesurf.com.kh
203.144.91.2	A+PTR	mx2.camgsm.com.kh
203.144.91.3	A+PTR	mx1.everyday.com.kh
203.144.91.3	A	mx1.mobitel.com.kh
203.144.91.3	A	smtp.everyday.com.kh
203.144.91.44	A	r1.sn-j5hbnh-2oie.googlevideo.com
203.144.91.81	A	scontent.fpnh9-1.fna.fbcdn.net
203.144.91.82	A	video.fpnh9-1.fna.fbcdn.net
203.144.91.96	A	z-p3-scontent.fpnh9-1.fna.fbcdn.net
203.144.91.97	A	instagram.fpnh9-1.fna.fbcdn.net
203.144.91.98	A	media.fpnh9-1.fna.whatsapp.net
203.144.91.140	A	r1.sn-j5hbnh-2oil.googlevideo.com
203.144.91.143	A	r4.sn-j5hbnh-2oil.googlevideo.com
203.144.91.144	A	r5.sn-j5hbnh-2oil.googlevideo.com
203.144.91.145	A	r6.sn-j5hbnh-2oil.googlevideo.com
203.144.92.1	PTR	rtr.telesurf.com.kh
203.144.93.1	PTR	rtr.telesurf.com.kh
203.144.93.188	A	youneversad.com
203.144.94.1	PTR	rtr.telesurf.com.kh
203.144.95.1	PTR	rtr.telesurf.com.kh
203.144.95.4	PTR	www.mytv.com.kh
203.144.95.5	PTR	gprs.mobitel.com.kh
203.144.95.6	PTR	gprs.mobitel.com.kh
203.144.95.98	A+PTR	mms.mobitel.com.kh
203.144.95.98	A	mms.cellcard.com.kh
203.144.95.99	PTR	apache.cellcard.com.kh
203.144.95.100	A+PTR	wapgw.mobitel.com.kh
203.144.95.146	PTR	gprs.mobitel.com.kh
203.144.95.147	PTR	gprs.mobitel.com.kh
203.144.95.148	PTR	gprs.mobitel.com.kh
203.144.95.149	PTR	gprs.mobitel.com.kh
203.144.95.188	A	youneversad.com