Robtex

Up: 116.66.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 116.66.220.0/23
Down right: 116.66.222.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
116.66.220.18	A	cdn01-xsea3.w2stream.com
116.66.220.19	PTR	mail.apcoasia.com
116.66.220.19	A	cdn11-xsea3.w2stream.com
116.66.220.82	PTR	ws220082.ca.pccwglobal.com
116.66.220.82	A	auroraa-hk.com
116.66.220.83	PTR	mx.eservicos.com.hk
116.66.220.83	A	mx.hackneyservices.com
116.66.220.83	A	mx3.paramont-asia.com.cn
116.66.220.84	PTR	mailhk-out.eservicos.com.hk
116.66.220.84	A	mx.servicessp.com
116.66.220.84	A	mx.auroraa-hk.com
116.66.220.86	PTR	ws220086.ca.pccwglobal.com
116.66.220.89	A	webmail.summerset.com.hk
116.66.220.89	A	webmail.eservicos.com.hk
116.66.220.136	PTR	sml.wenweipo.com
116.66.220.142	PTR	ws220142.ca.pccwglobal.com
116.66.220.142	A	i-otp.com
116.66.220.226	PTR	ws220226.ca.pccwglobal.com
116.66.220.243	PTR	ws220243.ca.pccwglobal.com
116.66.220.243	A	dns.hmm.com.hk
116.66.220.243	A	mayor.hmm.com.hk
116.66.220.245	PTR	hmm.com.hk
116.66.220.245	A	rightfaxserver.hmm.com.hk
116.66.221.31	PTR	ws221031.ca.pccwglobal.com
116.66.221.40	PTR	ws221040.ca.pccwglobal.com
116.66.221.40	A	ftp5.sierrawireless.com
116.66.221.46	PTR	ws221046.ca.pccwglobal.com
116.66.221.46	A	spf.sierrawireless.com
116.66.221.52	A	cnhkg-sslvpn.da.sierrawireless.com
116.66.221.57	A	cnhkg-vpn.da.sierrawireless.com
116.66.221.114	PTR	ws221114.ca.pccwglobal.com
116.66.221.114	A	mail.gruss.com.hk
116.66.221.160	PTR	ws221160.ca.pccwglobal.com
116.66.221.168	PTR	ws221168.ca.pccwglobal.com
116.66.221.238	PTR	ws221238.ca.pccwglobal.com
116.66.221.238	A	lg01.hkg04.pccwbtn.net
116.66.221.250	PTR	ws221250.ca.pccwglobal.com
116.66.222.82	PTR	ws222082.ca.pccwglobal.com
116.66.222.181	PTR	ws222181.ca.pccwglobal.com
116.66.222.193	PTR	ws222193.ca.pccwglobal.com
116.66.222.194	PTR	ws222194.ca.pccwglobal.com
116.66.223.104	PTR	ws223104.ca.pccwglobal.com
116.66.223.109	PTR	ws223109.ca.pccwglobal.com
116.66.223.130	PTR	ws223130.ca.pccwglobal.com