Robtex

Up: 83.137.240.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 83.137.240.0/25
Down right: 83.137.240.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.137.240.1	PTR	test.dr.gdf.fr
83.137.240.7	A	horizon.engie.com
83.137.240.16	A+PTR	admin.gaznet.gazdefrance.com
83.137.240.17	A	gaznet.gazdefrance.com
83.137.240.29	PTR	smtp.gazdefrance.com
83.137.240.30	PTR	smtp2.dr.gdf.fr
83.137.240.31	PTR	psdscama2.dr.gdf.fr
83.137.240.32	PTR	psdscama1.dr.gdf.fr
83.137.240.33	PTR	smtp11.dr.gdf.fr
83.137.240.33	A	smtp11.gazdefrance.com
83.137.240.34	PTR	smtp12.dr.gdf.fr
83.137.240.34	A	smtp12.gazdefrance.com
83.137.240.35	PTR	smtp11-out.dr.gdf.fr
83.137.240.36	PTR	smtp12-out.dr.gdf.fr
83.137.240.37	PTR	smtp13.dr.gdf.fr
83.137.240.37	A	smtp13.gazdefrance.com
83.137.240.38	PTR	smtp13-out.dr.gdf.fr
83.137.240.40	A+PTR	portail.gdi.grdf.fr
83.137.240.67	A+PTR	ftp.gdf.fr
83.137.240.68	A+PTR	ftp.dr.gdf.fr
83.137.240.86	A	admin.gazdefrance.com
83.137.240.95	A	entraide-handicap.asso.fr
83.137.240.95	A	www.entraide-handicap.asso.fr
83.137.240.99	A	jerouleaugaznaturel.fr
83.137.240.99	A	www.jerouleaugaznaturel.fr
83.137.240.99	A	jerouleaugaznaturel.com
83.137.240.104	A	cee.gdfsuez.com
83.137.240.106	A	www.gazdefrancegeneration.com
83.137.240.106	A	www.gdfgeneration.com
83.137.240.106	A	gdfgeneration.com
83.137.240.196	A	wipass.electrabel.com
83.137.240.201	A+PTR	s3_ext_relay.gdfsuez.com
83.137.240.202	A+PTR	s3_ext_relay.gdfsuez.com
83.137.240.207	A	home-assistance.be
83.137.240.211	A+PTR	dmzprox2.dr.gdf.fr
83.137.240.212	PTR	dmzprox3.dr.gdf.fr
83.137.240.216	PTR	dmzprox4nc.dr.gdf.fr
83.137.240.218	PTR	dmzprox1nc.dr.gdf.fr