Robtex

Up: 203.131.240.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 203.131.240.0/22
Down right: 203.131.244.0/22

IP	Type	Hostname
203.131.241.58	A+PTR	p1-0.cnc-h.chwahk02.hk.bb.gin.ntt.net
203.131.241.85	A+PTR	ce-0-2-0-3.r03.tkokhk01.hk.bb.gin.ntt.net
203.131.241.86	PTR	ae-5-51.r00.tkokhk01.hk.ce.gin.ntt.net
203.131.241.141	A+PTR	xe-0-1-0-3.r03.chwahk02.hk.bb.gin.ntt.net
203.131.241.162	PTR	ae-3-54.r02.chwahk02.hk.ce.gin.ntt.net
203.131.241.166	PTR	ae-3-66.r01.newthk03.hk.ce.gin.ntt.net
203.131.243.181	A	pnc-ad-ntt.rfihub.com
203.131.247.1	PTR	gwl-hk.mnsbone.net
203.131.247.3	PTR	s2l-hk.mnsbone.net
203.131.247.211	PTR	prod02.s.hkg.fullmeshnetworks.com