Robtex

Up: 218.255.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 218.255.21.0/25
Down right: 218.255.21.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
218.255.21.2	A	ns2.ayc.cloud
218.255.21.34	PTR	cm218-255-21-34.hkcable.com.hk
218.255.21.34	A	ns2.grandchances.com
218.255.21.34	A	ns2.fairfuture.com
218.255.21.35	PTR	cm218-255-21-35.hkcable.com.hk
218.255.21.35	A	ffnts.fairfuture.com
218.255.21.42	A	www.ttdist.com
218.255.21.60	PTR	static.reserve.wtt.net.hk
218.255.21.98	PTR	cm218-255-21-98.hkcable.com.hk
218.255.21.98	A	codr.gov.hk
218.255.21.98	A	www.codr.gov.hk
218.255.21.150	A+PTR	mail3.mailsage.com
218.255.21.150	A	mta.swiss-sure-agency.com
218.255.21.150	A	proxy7.foresttek.com
218.255.21.166	A	mail.alpineltd.hk
218.255.21.244	A	mail1.speedflex.hk
218.255.21.245	A	mail.speedflexprint.hk