Robtex

Up: 81.20.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 81.20.48.0/21
Down right: 81.20.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.20.48.1	A+PTR	master1.gcapmedia.net
81.20.48.2	A+PTR	master2.gcapmedia.net
81.20.48.3	A+PTR	wmserver1.gcapmedia.net
81.20.48.4	A	wmserver2.gcapmedia.net
81.20.48.48	PTR	mediaweb.musicradio.com
81.20.48.49	A+PTR	mediadist.musicradio.com
81.20.48.50	A+PTR	mediasrv.musicradio.com
81.20.48.50	A	mediasrv-the.musicradio.com
81.20.48.60	A	ns3.gcapmedia.net
81.20.48.93	A+PTR	ns2.as39202.co.uk
81.20.48.93	A	ns2.as39202.net
81.20.48.112	A	api.classicfm.com
81.20.48.112	A	api.capitalxtra.com
81.20.48.112	A	api.radiox.co.uk
81.20.48.113	PTR	travel.heartcymru.co.uk
81.20.48.113	A	capitalfm.com
81.20.48.114	PTR	int-news.thisisglobal.com
81.20.48.115	PTR	ultimatehalloffame.classicfm.co.uk
81.20.48.130	A	xboxvideos.musicradio.com
81.20.48.130	A	www.musiccontrolradio.co.uk
81.20.48.130	A	musiccontrolradio.com
81.20.48.139	A	thisisglobal.com
81.20.48.139	A	classicfm.com
81.20.48.139	A	mygoldmusic.co.uk
81.20.48.154	A	int-mobile.thisisglobal.com
81.20.48.156	A	classicfmexperiences.com
81.20.48.158	A	audio.hosting.thisisdax.com
81.20.48.158	A	catchup.hosting.thisisdax.com
81.20.48.162	A	media-ssl.musicradio.com
81.20.48.165	A	media-sov.musicradio.com
81.20.48.165	A	media-the.musicradio.com
81.20.48.165	A	media-ice.musicradio.com
81.20.48.182	A	beavonradiowestmids.com
81.20.48.253	A	gcap-the-lon.gcapmedia.net
81.20.48.254	A	msdp.gcapmedia.net
81.20.49.50	A	mediasrv-sov.musicradio.com
81.20.49.60	A+PTR	ns1.as39202.net
81.20.49.60	A	ns1.as39202.co.uk
81.20.49.79	A	ftp.musicradio.com
81.20.49.80	A	katyhillshow.com
81.20.49.80	A	newslinkonline.net
81.20.49.80	A	listentolife.net
81.20.49.93	PTR	ns0.as39202.net
81.20.49.125	A	mobile.thisisglobal.com
81.20.49.131	PTR	mdm.thisisglobal.com
81.20.49.142	A	cascadesso.communicorpuk.com
81.20.49.149	A	rpmobile.musicradio.com
81.20.49.149	A	vis.musicradio.com
81.20.49.150	A	mobile.thisisglobal.com
81.20.49.254	PTR	sov.musicradio.com
81.20.53.31	A	thisisglobal.com
81.20.53.32	A	classicfm.com
81.20.53.32	A	mygoldmusic.co.uk
81.20.53.33	A	capitalfm.com
81.20.53.34	A	heart.co.uk