Robtex

Up: 193.113.0.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.113.4.0/23
Down right: 193.113.6.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.113.4.1	A+PTR	www.supplierportaluk.bt.com
193.113.4.1	A	supplierportaluk.bt.com
193.113.4.23	A	da-dy.bt.com
193.113.4.29	A	u.bt.com
193.113.4.30	A	ets.redcare.com
193.113.4.32	A	www.redcare.com
193.113.4.32	A	www.redcare.bt.com
193.113.4.43	A	eco-api-or.bt.com
193.113.4.44	A	eco-api-or.bt.com
193.113.4.47	A	ecensus-relay-red.bt.com
193.113.4.54	A	iib.bt.com
193.113.4.57	A	mapi.robt.bt.co.uk
193.113.4.60	A	secure.business.bt.com
193.113.4.63	PTR	saastestcallback.bt.com
193.113.4.102	A	btopenworld.com
193.113.4.102	A	www.btyahoo.org
193.113.4.102	A	www.btyahoo.co.uk
193.113.4.110	A+PTR	counterpane.sso.myaccount.globalservices.bt.com
193.113.4.110	A	www.mssportal.bt.com
193.113.4.110	A	mssportal.bt.com
193.113.4.135	PTR	www.b2b.btretail-dy.bt.com
193.113.4.150	A	bos.btbroadbandoffice.com
193.113.4.151	A	preview.btbroadbandoffice.com
193.113.4.153	A	www.speedtest.btwholesale.com
193.113.4.153	A	test3.speedtest.btwholesale.com
193.113.4.153	A	speedtest.btwholesale.com
193.113.4.154	A	www.speedtest.btwholesale.com
193.113.4.154	A	test3.speedtest.btwholesale.com
193.113.4.154	A	speedtest.btwholesale.com
193.113.4.166	A	signin1.bt.com
193.113.4.170	A	btsportgolf.com
193.113.4.170	A	btsportfootball.com
193.113.4.170	A	supportersclub.org
193.113.4.192	A	ophone.bt.com
193.113.4.194	A	mydonatetelethonsappeals.bt.com
193.113.4.202	A	btmsas.bt.com
193.113.4.204	A	www.btcommunicationproducts.co.uk
193.113.4.222	A	dslchecker.bt.com
193.113.4.227	A	register.btinternet.com
193.113.4.233	PTR	bscrefnw02.nexus.btintra.com
193.113.4.237	PTR	bscrefnw03-ws.nexus.btintra.com
193.113.4.240	PTR	bscrefnw04-ws.nexus.btintra.com
193.113.4.253	A	btsecuredonations.bt.com
193.113.5.52	A	dy-ns-snip.gslbext.bt.com
193.113.5.55	A	myapps-xs.bt.com
193.113.5.56	A	rd-ns-snip.gslbexternal.bt.com
193.113.5.68	A	www2.btbroadbandoffice.com
193.113.5.71	A	myoffice.bt.com
193.113.5.72	A	btbsecure.business.bt.com
193.113.5.73	A	preview.btbsecure.business.bt.com
193.113.5.74	A	mail.tcrelay.net
193.113.5.84	PTR	cestnwnt01.lon.bt.com
193.113.5.84	A	samlfed.bt.com
193.113.5.90	A	employeegate.bt.com
193.113.5.93	A	ukb-agentonline.bt.com
193.113.5.96	A	www.n3crm.nhs.uk
193.113.5.104	A+PTR	dyobmr.btconnect.com
193.113.5.104	A	mail.silverferngroup.co.uk
193.113.5.104	A	mail.paparazzirestaurant.co.uk
193.113.5.105	PTR	dyslmr.btconnect.com
193.113.5.196	A	employeegate.bt.com
193.113.5.197	A	login.secure.bt.com
193.113.5.198	A	dev-con-fed.bt.com
193.113.5.199	A	ci-con-fed.bt.com