Robtex

Up: 212.42.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 212.42.0.0/20
Down right: 212.42.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.42.0.34	PTR	mouse.alice.net.uk
212.42.1.3	PTR	guest.stripe21.com
212.42.1.18	A	rtmail.redskyit.com
212.42.1.28	A	myclubmyway.com
212.42.1.29	A	www.infiniti-gp.com
212.42.1.30	A	www.prismteam.com
212.42.1.34	A+PTR	ns2.stripe21.net.uk
212.42.1.34	A	mail3.stripe21.com
212.42.1.34	A	relay.stripe21.com
212.42.1.42	A	gamma.stripe21.com
212.42.1.68	A+PTR	ns1.stripe21.com
212.42.1.68	A+PTR	ns1.stripe21networks.com
212.42.1.68	A	hostmaster.stripe21networks.com
212.42.1.73	A	relay.stripe21.com
212.42.1.104	A	dcnthn.stripe21.com
212.42.1.130	PTR	firecoral.org
212.42.1.171	A+PTR	dcnhex.stripe21.com
212.42.1.198	PTR	esslimited.com
212.42.1.205	A	fashionspy.net
212.42.1.205	A	digitalspy.fr
212.42.1.205	A	soapspy.org
212.42.1.226	PTR	icon-plc.co.uk
212.42.1.229	A	pumpkin.quakenet.org
212.42.1.231	A	lightening.littoralis.com
212.42.1.234	A	rdrecruit.com
212.42.1.234	A	rdrecruitment.com
212.42.3.2	PTR	eq3int.digitalspy.co.uk
212.42.3.6	A	gorilla.hdigital.net
212.42.3.21	A	ns3.digitalspy.co.uk
212.42.3.33	PTR	tc33.hdigital.net
212.42.3.41	A	geo2.digitalspy.co.uk
212.42.3.41	A	eqtc.digitalspy.co.uk
212.42.3.44	A	www.realpeoplemagazine.co.uk
212.42.3.44	A	realpeoplemagazine.co.uk
212.42.4.20	A	mx1.mobilemini.co.uk
212.42.4.248	PTR	dynamail.net
212.42.4.250	PTR	swiftmail.org
212.42.8.33	PTR	tomorrownow.com
212.42.8.34	PTR	tomorrownow.com
212.42.8.35	PTR	tomorrownow.com
212.42.8.36	PTR	tomorrownow.com
212.42.8.67	PTR	partneraid.com
212.42.8.106	A	mail.pksarchitects.com
212.42.8.128	PTR	t128.adsl.stripe21.com
212.42.8.162	PTR	pollard.adsl.stripe21.com
212.42.8.179	A	gwbproducts.co.uk
212.42.8.195	PTR	pdc-thdo.lionverge.co.uk
212.42.8.195	A	lionverge.co.uk
212.42.10.128	PTR	ibm.co.uk
212.42.10.129	PTR	ibm.co.uk
212.42.10.130	PTR	ibm.co.uk
212.42.10.131	PTR	ibm.co.uk
212.42.10.160	PTR	ibm.co.uk
212.42.10.161	PTR	ibm.co.uk
212.42.10.162	PTR	ibm.co.uk
212.42.10.163	PTR	ibm.co.uk
212.42.10.203	A	scn01col1uk.wspgroup.com
212.42.12.13	A	drtvcentre.com
212.42.14.13	A	ns.digitalspy.co.uk
212.42.14.13	A	int.rosalie.digitalspy.co.uk
212.42.14.13	A	ns1.digitalspy.co.uk
212.42.14.30	A	ns2.digitalspy.co.uk
212.42.14.32	PTR	myletterbox.net
212.42.14.35	PTR	mail-zone.org
212.42.14.100	A	ns1.internal.redskyit.com
212.42.15.129	A+PTR	webmail.everymancinema.com
212.42.15.129	A	mail.everymancinema.com
212.42.15.155	A	insourceus.co.uk
212.42.15.155	A	stwconsultant.com
212.42.15.194	A	shoebury.efinity.info
212.42.15.210	A	northfleet.efinity.info
212.42.17.18	A	exch.flyertech.com
212.42.17.50	A	exch.marcusknightley.co.uk
212.42.17.74	A	exch.greenbox-ep.com
212.42.17.130	PTR	mm-computing.com
212.42.17.130	A	server.douglas-law.co.uk
212.42.17.162	PTR	mm-computing.com
212.42.18.27	A+PTR	mail1.scheidt-bachmannuk.com
212.42.18.50	A	mail.lowdhams.com
212.42.18.50	A	mail.lowdhamleisureworld.net
212.42.18.50	A	satinarsystem.net
212.42.18.98	PTR	activesync.cellclear.com
212.42.18.100	A	mail.obsidiantelecoms.com
212.42.18.102	PTR	activesync.cellclear.com
212.42.18.114	PTR	ns.ldcwebhost1.co.uk
212.42.18.114	A	mail.learnerdriving.net
212.42.18.114	A	ns.ldcdrivingschools.com
212.42.18.115	A	passingwithsteve.co.uk
212.42.18.124	A	mail.learnerdriving.net
212.42.18.186	PTR	ns.ldcwebhost5.co.uk
212.42.18.186	A	ns.passwithwill.co.uk
212.42.18.186	A	ns.drivebishop.co.uk
212.42.18.187	PTR	ns.ldcwebhost6.co.uk
212.42.18.188	PTR	ns.ldcwebhost7.co.uk
212.42.20.57	A	mail3.therakind.com
212.42.20.178	A	mailgate.easyconnectuk.com
212.42.20.178	A	mailgate.sashuk.com
212.42.20.178	A	mailgate.fitrite.info
212.42.20.211	A	apollo.onixcloud.net
212.42.21.81	PTR	quest-energy.co.uk
212.42.21.114	A+PTR	mail.seriousideas.com
212.42.21.114	A	mail2.seriousideas.com
212.42.21.114	A	office.seriousideas.com
212.42.21.130	A	lentacph.stripe21.com
212.42.21.137	PTR	mail.futuresystems.co.uk
212.42.21.187	A+PTR	remote.seriousideas.com
212.42.21.202	A+PTR	mail.towsure.com
212.42.21.202	A	mx.ciberschool.net
212.42.21.202	A	wan2.towsure.com
212.42.21.218	A+PTR	mail.ibms.org
212.42.21.226	A	mail.standard-wool.co.uk
212.42.22.66	A	mail.auroramedia.com
212.42.22.68	A	mail2.auroramedia.com
212.42.22.212	PTR	ldcmailhost1.co.uk
212.42.22.212	A	mail.passwithvena.co.uk
212.42.22.212	A	mail.lessonswithshaun.co.uk
212.42.25.3	PTR	postrunner.net
212.42.25.5	PTR	aerogram.net
212.42.25.7	PTR	borderbridge.net
212.42.25.16	PTR	mailit.org