Robtex

Up: 188.172.248.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 188.172.248.0/25
Down right: 188.172.248.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
188.172.248.0	PTR	host.domain
188.172.248.1	A+PTR	acns02.xaas.systems
188.172.248.1	A	tv-ns2.teamviewer.com
188.172.248.1	A	acns02.anexia-it.com
188.172.248.23	PTR	indexyvpm188172248.ctelnetco.com
188.172.248.24	PTR	indexdxpmjq188172248.ctelnetco.com