Robtex

Up: 87.239.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 87.239.21.0/25
Down right: 87.239.21.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.239.21.2	A	fusionticket.eu
87.239.21.2	A	mail.fusionticket.eu
87.239.21.2	A	www.fusionticket.com
87.239.21.3	PTR	57ef1503.webjoytools.com
87.239.21.3	A	mail.summerbeeproductions.com
87.239.21.3	A	summerbeeproductions.com
87.239.21.8	A+PTR	57ef1508.premium2.uk.plesk-server.com
87.239.21.8	A	dronesdanceshow.com
87.239.21.8	A	ns1.sebastian.test.uk.plesk-server.com
87.239.21.9	PTR	57ef1509.brookfieldtrainingconsultancyltd.brookfield.uk.easy-server.com
87.239.21.9	A	rudloearms.com
87.239.21.9	A	www.rudloearms.com
87.239.21.10	PTR	57ef150a.anna.amotherbyhosting.co.uk
87.239.21.10	A	ns1.amotherbyhosting.co.uk
87.239.21.14	A+PTR	57ef150e.ynh4.uk.easy-server.com
87.239.21.14	A	stebennett.co.uk
87.239.21.15	A+PTR	57ef150f.new.theagencygloballimited.uk.easy-server.com
87.239.21.15	A	mail.mazars.mg
87.239.21.15	A	ns1.theagencyglobal.com
87.239.21.19	A+PTR	afjw.uk.plesk-server.com
87.239.21.19	A	mail.afjw.uk.plesk-server.com
87.239.21.19	A	mail.jmw-co.com
87.239.21.20	PTR	57ef1514.wm-0001.uk.easy-server.com
87.239.21.20	A	wasserlotto.de
87.239.21.20	A	sasse-spirits.com
87.239.21.22	A	hardcorehockey.co.uk
87.239.21.23	A	winmywishlist.co.uk
87.239.21.23	A	winmywishlist.com
87.239.21.25	PTR	57ef1519.agent8v2.uk.easy-server.com
87.239.21.25	A	mailgate.spurelectron.com
87.239.21.25	A	mail.testpod.co.uk
87.239.21.26	A	tefltoulouse.com
87.239.21.26	A	mail.tefltoulouse.com
87.239.21.26	A	ns2.tefltoulouse.com
87.239.21.27	A+PTR	future-focused-finance.uk.plesk-server.com
87.239.21.27	A	mail.future-focused-finance.uk.plesk-server.com
87.239.21.27	A	www.futurefocusedfinance.nhs.uk
87.239.21.28	PTR	57ef151c.aquiss.uk.easy-server.com
87.239.21.28	A	ebilling.aquiss.net
87.239.21.28	A	ns.ebilling.aquiss.net
87.239.21.29	A	mail.creditmerchant.co.uk
87.239.21.29	A	creditmerchant.co.uk
87.239.21.30	PTR	57ef151e.new.uk.plesk-server.com
87.239.21.30	A	khits.co.uk
87.239.21.30	A	mail.khits.co.uk
87.239.21.31	A	weddinggiftcard.lauraashley.com
87.239.21.31	A	media.lauraashley.com
87.239.21.31	A	careers.lauraashley.com
87.239.21.32	A	mail.reduc-pour-vous.com
87.239.21.32	A	reduc-pour-vous.com
87.239.21.32	A	mail.mesoffrescolorees.com
87.239.21.33	PTR	shasathonuk.uk.plesk-server.com
87.239.21.34	A+PTR	57ef1522.ynhltd.plesk-server.com
87.239.21.34	A	learnenglishadvanced.com
87.239.21.34	A	mail.learnenglishadvanced.com
87.239.21.35	PTR	traveledex.uk.plesk-server.com
87.239.21.35	A	ns1.traveledex.uk.plesk-server.com
87.239.21.35	A	mail.traveledex.com
87.239.21.37	A+PTR	57ef1525.ynh4.uk.easy-server.com
87.239.21.37	A	mail.cgcdistribution.co.uk
87.239.21.39	A	mail.immersiveaudio.net
87.239.21.40	PTR	57ef1528.den1-new.dencreative.com
87.239.21.40	A	mail.claudiawelsh.com
87.239.21.40	A	lahive.co.uk
87.239.21.42	PTR	57ef152a.ynh4.uk.easy-server.com
87.239.21.42	A	ultra-dns.co.uk
87.239.21.42	A	mail.ultra-dns.co.uk
87.239.21.44	A	ricohbidsupport.com
87.239.21.44	A	mail.theupperside.com
87.239.21.45	A+PTR	simafri20.uk.plesk-server.com
87.239.21.45	A	mail.simafri20.uk.plesk-server.com
87.239.21.45	A	simafri20.mg-handling.com
87.239.21.47	PTR	57ef152f.kingofshaves.uk.easy-server.com
87.239.21.48	PTR	57ef1530.myweddingstory.uk.easy-server.com
87.239.21.48	A	87.239.21.48.vexenis.com
87.239.21.48	A	progressics.de
87.239.21.50	A+PTR	57ef1532.blackthorndesign-2.uk.plesk-server.com