Robtex

Up: 193.109.198.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.109.198.0/25
Down right: 193.109.198.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.109.198.20	PTR	voip-1.dental-directory.co.uk
193.109.198.54	PTR	host54.collegiate.co.uk
193.109.198.117	PTR	alerts.interserve.com
193.109.198.117	A	interservesiteservices.com
193.109.198.117	A	interserveplc.co.uk