Robtex

Up: 5.28.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.28.48.0/22
Down right: 5.28.52.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.28.48.46	A	mail.oseeuro.com
5.28.48.131	PTR	ip-5-28-48-131.itps.uk.net
5.28.48.146	PTR	ip-5-28-48-146.itps.uk.net
5.28.50.2	PTR	mailgate.crabpress.co.uk
5.28.50.68	PTR	ip-5-28-50-68.itps.uk.net.50.28.5.in-addr.arpa
5.28.50.74	A+PTR	remote.rookmatthewssayer.co.uk
5.28.50.76	A+PTR	mail.rookmatthewssayer.co.uk
5.28.50.90	A+PTR	mymail.greatnorthairambulance.co.uk
5.28.50.131	A+PTR	mailrelay.mmfmail.co.uk
5.28.50.131	A	mmfmail.co.uk
5.28.50.138	A	mail.sicltd.com
5.28.50.162	A+PTR	mailhost.calidore.com
5.28.50.170	A+PTR	mail.rosewoodpackaging.co.uk
5.28.50.178	PTR	ip-5-28-50-178.itps.uk.net.50.28.5.in-addr.arpa
5.28.50.178	A+PTR	mail.anglitemp.com
5.28.50.179	PTR	mail.anglitemp.com
5.28.50.250	PTR	email.skfoods.co.uk
5.28.50.250	PTR	ip-5-28-50-250.itps.uk.net.50.28.5.in-addr.arpa
5.28.50.252	A+PTR	email.skfoods.co.uk
5.28.51.34	A+PTR	remote.tbgsupport.com
5.28.51.35	A+PTR	barracuda.tbgsupport.com
5.28.51.35	A	mail.totalbusiness.co.uk
5.28.51.35	A	cuda.tbgsupport.com
5.28.51.43	A	amazing-courses.com
5.28.51.43	A	www.amazing-grades.com
5.28.51.43	A	amazing-grades.com
5.28.51.50	A+PTR	mail.jndunn.co.uk
5.28.51.68	A	datapointhd1.com
5.28.51.171	PTR	mail.simpsongroup.co.uk
5.28.51.171	A	simpsongroupmail.com
5.28.51.172	A	pop-fit.com
5.28.52.8	A+PTR	newcastleprep.co.uk
5.28.52.11	A	www.bridgewaterequityrelease.co.uk
5.28.52.11	A	bridgewaterequityrelease.co.uk
5.28.52.11	A	graingertrust.co.uk
5.28.52.15	PTR	nwconnected.co.uk
5.28.52.26	PTR	barracuda.molevalleyfarmers.com
5.28.52.26	A	mail.molevalleyfarmdirect.com
5.28.52.26	A	mail.molevalleyfarmers.net
5.28.52.227	A+PTR	mail.zerolight.com
5.28.52.228	A	zl.limited
5.28.52.233	A	push.eutechnyx.net
5.28.52.250	PTR	mail.zerolight.com
5.28.52.250	A	mail1.ipconfigs.com
5.28.53.12	A	mail2.clevelandbridge.com
5.28.53.12	A	mailhost.clevelandbridge.com
5.28.53.13	A+PTR	mail.clevelandbridge.com
5.28.53.19	A+PTR	mailsvr2.ses.coop
5.28.53.19	A	mailserver.fiscus.co
5.28.53.19	A	remote.ses.coop
5.28.53.43	A	www.bridgewaterquickquotecalculator.co.uk
5.28.53.51	A	ceroc-mail.com
5.28.53.51	A	mail.ceroc-mail.com
5.28.53.52	A	ceroc-news.co.uk
5.28.53.52	A	mail.ceroc-news.co.uk
5.28.53.53	PTR	cfdb.co.uk
5.28.53.54	PTR	reklaw-uk.com
5.28.53.98	PTR	remote.mgnfire.com
5.28.53.99	A+PTR	firetronic.mgnfire.com
5.28.53.122	A+PTR	mailserver2.idsfireandsecurity.com
5.28.53.122	A	remote.idsfireandsecurity.com
5.28.53.124	A	remote.fm-4u.co.uk
5.28.53.179	A	e-ksf.org
5.28.53.180	A	at-learning.org
5.28.53.180	A	*.at-learning.org
5.28.53.181	A	at-performance.com
5.28.54.2	A+PTR	mailgatelegacy.lifeways.co.uk
5.28.54.2	A	mailgatelegacy.autismcareuk.com
5.28.54.2	A	mailgatelegacy.homecare-solutions.com
5.28.54.17	A+PTR	mailgate1.lifeways.co.uk
5.28.54.17	PTR	smail.lifeways.co.uk
5.28.54.17	A	smail.sil-uk.com
5.28.54.18	PTR	mailgate2.lifeways.co.uk
5.28.54.18	PTR	smail.lifeways.co.uk
5.28.54.18	A	smail.sil-uk.com
5.28.54.82	A+PTR	mail.orwin.co.uk
5.28.54.206	A	databasesonline.co.uk
5.28.54.206	A	filtered.co.uk
5.28.54.206	A	nepeg.co.uk
5.28.54.226	PTR	ccrelay.it-ps.com
5.28.54.226	A	cableproperties.com