Robtex

Up: 193.128.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 193.128.80.0/21
Down right: 193.128.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.128.83.1	PTR	popmail.hmb.co.uk
193.128.83.67	PTR	host1.aa-jupiter.com
193.128.83.68	PTR	host2.aa-jupiter.com
193.128.83.131	A	mailhost.indigolighthouse.com
193.128.83.132	A	mailhost2.indigolighthouse.com
193.128.85.50	A	pendaflex.biz
193.128.85.50	A	www.bindinglamination.com
193.128.85.50	A	bindinglamination.com
193.128.85.51	PTR	mail.xyronmail.com
193.128.85.51	A	mail.xyron.com
193.128.85.158	A+PTR	cubimodu02-gw.customer.uk.uu.net
193.128.85.211	PTR	exchange.investcorp.com
193.128.85.218	A	cherwellexch.cherwellvalley.com
193.128.86.10	A+PTR	inet.ultimabusiness.com
193.128.86.23	A	www.ultimabusiness.com
193.128.86.23	A	ultimabusiness.com
193.128.86.23	A	ultima.com
193.128.86.24	A	owa.ultimabusiness.com
193.128.86.52	A	tower.ultimabusiness.com
193.128.86.59	A	stats.ultimabusiness.com
193.128.86.60	A+PTR	blackbird.ultimabusiness.com
193.128.86.81	PTR	mailgate.wsufftrust.org.uk
193.128.86.150	PTR	mail.creative-assembly.com
193.128.87.36	PTR	mail.perkinelmer.com
193.128.88.180	A	nrosh-online.net
193.128.89.14	PTR	pipex-gw
193.128.89.75	A	ebitsllp.com
193.128.89.75	A	www.ebitsllp.com
193.128.89.84	PTR	mail.ebitsllp.com
193.128.89.88	PTR	mail.ebitsllp.com
193.128.89.88	A	intoplanefuelling.com
193.128.89.88	A	intoplanefueling.com
193.128.89.89	A	mail.intoplanefuelling.com
193.128.89.190	A+PTR	agnshipl01-gw.customer.uk.uu.net
193.128.90.1	A	wensley.gartner.com
193.128.90.2	A	wiltshire.gartner.com
193.128.90.8	PTR	lithium.gartner.com
193.128.90.9	PTR	beryllium.gartner.com