Robtex

Up: 192.109.148.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.109.148.0/25
Down right: 192.109.148.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.109.148.1	PTR	frxxxx-xi-34.saint-gobain.com
192.109.148.2	PTR	fr2535-xi-3.saint-gobain.com
192.109.148.3	PTR	fr2536-xi-4.saint-gobain.com
192.109.148.14	A	mail7.saint-gobain.com
192.109.148.15	A+PTR	mail9.saint-gobain.com
192.109.148.16	A+PTR	mail.saint-gobain.com
192.109.148.16	A	mail.rigips.ch
192.109.148.17	A+PTR	mail3.saint-gobain.com
192.109.148.18	A+PTR	mail5.saint-gobain.com
192.109.148.21	PTR	fr2535-pe-21.saint-gobain.com
192.109.148.22	PTR	fr2536-pe-21.saint-gobain.com
192.109.148.25	PTR	nsx2.saint-gobain.com
192.109.148.27	A+PTR	im.bassettsonline.com
192.109.148.27	A+PTR	im.saint-gobain.com
192.109.148.27	A	sip.ext.saint-gobain.com
192.109.148.31	PTR	mmegectest.lesmiroirs.com
192.109.148.32	PTR	mail.saint-gobain.com
192.109.148.32	A	mail.muffenrohr.de
192.109.148.32	A	mail.rigips.sk
192.109.148.33	PTR	mail3.saint-gobain.com
192.109.148.34	A+PTR	cwa.lesmiroirs.com
192.109.148.41	PTR	mobileservice.mblsvc.saint-gobain.com
192.109.148.42	PTR	mobilemail.mblsvc.saint-gobain.com
192.109.148.43	PTR	valmobileservice.saint-gobain.com
192.109.148.44	PTR	valmobilemail.saint-gobain.com
192.109.148.51	PTR	fr2535-xe-7.saint-gobain.com
192.109.148.52	PTR	fr2536-xe-7.saint-gobain.com
192.109.148.62	A	im.saint-gobain.com
192.109.148.121	PTR	fr2535-pe-21.saint-gobain.com
192.109.148.122	PTR	fr2536-pe-21.saint-gobain.com