Robtex

Up: 116.12.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 116.12.80.0/23
Down right: 116.12.82.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
116.12.80.38	PTR	filter.ewisl.net
116.12.80.39	A+PTR	filter.ewisl.net
116.12.80.40	PTR	ewisl.net
116.12.80.40	A	skperera.com
116.12.80.40	A	zontaclubiicolombo.com
116.12.80.90	A+PTR	mail.cha.lk
116.12.80.114	PTR	gns.greenlanka.net
116.12.80.115	A+PTR	mail.evacmb.com
116.12.80.115	A	mail.greenlanka-travels.com
116.12.80.118	A+PTR	dominohub.greenlanka.net
116.12.80.119	A	mail.unicornscolombo.com
116.12.80.119	A	mail.glkterminal.net
116.12.80.119	A	mail.oceanlanka.net
116.12.80.123	A+PTR	spampg.greenlanka.net
116.12.80.126	PTR	seamail.oceanlanka.net
116.12.80.147	A	mail.arpipharma.com
116.12.80.165	A	mail.jinadasa.com
116.12.80.194	A+PTR	mail.jetwinghotels.com
116.12.80.194	A	mail.jetwingsymphony.com
116.12.80.213	PTR	relay.png.lk
116.12.80.213	A+PTR	relay.singhagiri.lk
116.12.80.214	A+PTR	aban-mgw.abansgroup.com
116.12.80.214	A+PTR	relay.abansgroup.com
116.12.80.214	PTR	mail.aze.lk
116.12.81.98	A	mail.nawaloka.com
116.12.81.212	A	mail2.dpmco.com
116.12.81.243	A+PTR	mailgw.vsis.lk
116.12.81.250	A+PTR	mail.regalcalibre.co.uk