Robtex

Up: 85.158.140.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 85.158.141.0/25
Down right: 85.158.141.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
85.158.141.6	PTR	unassigned.messagelabs.net
85.158.141.7	PTR	unassigned.messagelabs.net
85.158.141.13	A+PTR	r.t66.messagelabs.net
85.158.141.16	A+PTR	r.t93.messagelabs.net
85.158.141.21	PTR	unassigned.messagelabs.net
85.158.141.21	A	r.t26.messagelabs.net
85.158.141.22	PTR	r.t30.messagelabs.net
85.158.141.23	A+PTR	r.t68.messagelabs.net
85.158.141.39	PTR	unassigned.messagelabs.net
85.158.141.48	PTR	unassigned.messagelabs.net
85.158.141.50	PTR	unassigned.messagelabs.net
85.158.141.52	PTR	unassigned.messagelabs.net
85.158.141.53	PTR	unassigned.messagelabs.net
85.158.141.83	PTR	unassigned.messagelabs.net
85.158.141.101	PTR	e1.asr5.ld.messagelabs.net
85.158.141.126	A+PTR	h6.v113.ldn.messagelabs.net
85.158.141.136	PTR	v100.r.t25.messagelabs.net
85.158.141.140	PTR	unassigned.messagelabs.net
85.158.141.168	PTR	unassigned.messagelabs.net
85.158.141.190	PTR	mail553.messagelabs.com
85.158.141.190	A	mail2.laingconnect.com
85.158.141.190	A	mail2.laingconnect.eu
85.158.141.231	PTR	unassigned.messagelabs.net
85.158.141.237	PTR	unassigned.messagelabs.net
85.158.141.239	PTR	unassigned.messagelabs.net
85.158.141.240	PTR	unassigned.messagelabs.net