Robtex

Up: 193.84.86.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.84.87.0/25
Down right: 193.84.87.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.84.87.10	A+PTR	ns1.gradwell.net
193.84.87.10	A	ns5.ssl-domain.co.uk
193.84.87.10	A	ns2.openbrolly.com
193.84.87.11	A+PTR	ns-global.kjsl.com
193.84.87.17	PTR	www.gradwell.com
193.84.87.20	PTR	lbns1.gradwell.net
193.84.87.21	PTR	ns2.lexsynergy.com
193.84.87.23	A+PTR	ns1.rokkhost.com
193.84.87.23	A	dns1.rokkhost.com
193.84.87.25	PTR	ns3.dynam.co.uk
193.84.87.26	PTR	ns0.oxfordfertilityunit.com
193.84.87.33	PTR	sov-mail-b0009.gradwell.net
193.84.87.42	PTR	sov-mail-b0018.gradwell.net
193.84.87.100	A	sh-dns-1.gradwell.net