Robtex

Up: 5.255.136.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 5.255.137.0/25
Down right: 5.255.137.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.255.137.7	A+PTR	ns2.hyperneph.com
5.255.137.17	PTR	mail.fulcrumit.eu
5.255.137.20	A+PTR	cluster1.hyperneph.com
5.255.137.20	A	vapormax.co.uk
5.255.137.20	A	administrator.campsie.com
5.255.137.21	A+PTR	custftpa.hyperneph.com
5.255.137.22	A+PTR	millivres.hyperneph.com
5.255.137.24	A+PTR	git.hyperneph.com
5.255.137.38	PTR	bond.harrietlegacy.uk
5.255.137.76	A	fourcpl.co.uk
5.255.137.205	A+PTR	phonetestnewip.fulcrumit.eu