Robtex

Up: 212.30.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 212.30.20.0/23
Down right: 212.30.22.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.30.20.26	A	mail.modiford.com
212.30.20.26	A	jubileeradio.org
212.30.20.82	A+PTR	mail.island-consultants.com
212.30.20.82	A	mail.calmaccrewing.com
212.30.20.82	A	mail.northlinkcrewing.com
212.30.20.134	A	portal.aquitainetrust.com
212.30.20.166	A+PTR	mail.channelislandceramics.com
212.30.20.222	PTR	hodsonco.gg
212.30.20.242	A+PTR	mail.lovellozanne.com
212.30.20.246	A+PTR	popmail.afradvocates.com
212.30.21.10	A	post.demogsy.com
212.30.21.34	A	mail3.submarine.gg
212.30.21.34	A	mail.submarine.gg
212.30.21.50	A	mail2.joys.com
212.30.21.66	A+PTR	mail.willowtrust.com
212.30.21.77	A	mail.sphereman.com
212.30.21.100	PTR	mail.smcl.co.gg
212.30.21.117	PTR	mail.smcl.co.gg
212.30.21.123	PTR	mail.asl.gg
212.30.21.123	A+PTR	mail.asl.je
212.30.21.123	A+PTR	mail.altsol.co.uk
212.30.21.124	A	mx1.asl.gg
212.30.21.124	A	mx1.assuredltd.com
212.30.21.125	A	mx2.assuredltd.com
212.30.21.125	A	mx2.asl.gg
212.30.21.162	A+PTR	mail.albanytrustee.com
212.30.21.162	A+PTR	mail.newporthouse.co.gg
212.30.21.162	A	albanytrustee.com
212.30.21.198	A+PTR	mail.blenheimgroup.com
212.30.21.204	A	mail.lince-salisbury.com
212.30.21.204	A	mail.lincesalisbury.com
212.30.21.217	PTR	ay.gg
212.30.22.3	PTR	mail.msdinternational.com
212.30.22.3	PTR	bbdp212.30.22.3.network.sure.com
212.30.22.5	A+PTR	sbsbsrv.stanbrouard.com
212.30.22.5	PTR	bbdp212.30.22.5.network.sure.com
212.30.22.7	PTR	mail.healthcare.gg
212.30.22.7	PTR	bbdp212.30.22.7.network.sure.com
212.30.22.13	PTR	bbdp212.30.22.13.network.sure.com
212.30.22.13	A	jmarquis.co.uk
212.30.22.17	PTR	mdnts03.mercurydistribution.com
212.30.22.17	PTR	bbdp212.30.22.17.network.sure.com
212.30.22.22	PTR	aurignycargo.biz
212.30.22.22	PTR	islandcomputers.com
212.30.22.22	PTR	treemail.net
212.30.22.34	A+PTR	mail02.rmb-is.co.gg
212.30.22.34	PTR	bbdp212.30.22.34.network.sure.com
212.30.22.51	PTR	bbdp212.30.22.51.network.sure.com
212.30.22.51	A	grangelodge-reservations.com
212.30.22.97	PTR	placingpeople1st.co.uk
212.30.22.97	PTR	bbdp212.30.22.97.network.sure.com
212.30.22.97	A	1strecruit.1strecruit.com
212.30.22.102	PTR	mail.momeara.co.uk
212.30.22.102	PTR	bbdp212.30.22.102.network.sure.com
212.30.22.106	A+PTR	mail.monaflex.com
212.30.22.106	PTR	bbdp212.30.22.106.network.sure.com
212.30.22.127	A	mail.kempletissier.com
212.30.22.143	A+PTR	mail.bourse.gg
212.30.22.143	PTR	bbdp212.30.22.143.network.sure.com
212.30.22.146	A	mail.guernseychamber.com
212.30.22.161	PTR	alderneywifi.network.sure.com
212.30.22.161	PTR	bbdp212.30.22.161.network.sure.com
212.30.22.179	A	smtp.spf.gg
212.30.22.180	PTR	roseandcrown.ws
212.30.22.180	PTR	bbdp212.30.22.180.network.sure.com
212.30.22.180	A	wine.gg
212.30.22.191	PTR	waterloohousewifi.etwork.sure.com
212.30.22.191	PTR	bbdp212.30.22.191.network.sure.com
212.30.22.214	PTR	mail.channelinsurancebrokers.co.gg
212.30.22.214	PTR	bbdp212.30.22.214.network.sure.com
212.30.22.217	PTR	bbdp212.30.22.217.network.sure.com
212.30.22.217	A+PTR	office.ay.gg
212.30.22.217	A	ay.gg
212.30.22.222	PTR	bbdp212.30.22.222.network.sure.com
212.30.22.222	A	mail.situationsrecruitment.com
212.30.22.230	PTR	mail.castlemaritime.com
212.30.22.230	A+PTR	mail.quantum-medmarine.com
212.30.22.230	PTR	bbdp212.30.22.230.network.sure.com
212.30.22.231	PTR	bbdp212.30.22.231.network.sure.com
212.30.22.231	A	alpha.pjsmith.me.uk
212.30.22.231	A	30nsd.cfdnsfo.com
212.30.22.243	A+PTR	spf.mailgateway.sigmagroup.gg
212.30.22.243	A	mailgateway.sigmagroup.gg
212.30.22.244	PTR	www.goodnature-ci.com
212.30.22.244	PTR	bbdp212.30.22.244.network.sure.com
212.30.22.244	A	goodnature.co.uk
212.30.23.9	PTR	bbd9.business.network.sure.com
212.30.23.99	PTR	bbd99.business.network.sure.com
212.30.23.140	PTR	bbd140.business.network.sure.com
212.30.23.140	A	dns4.name-s.net
212.30.23.167	PTR	bbd167.business.network.sure.com