Robtex

Up: 212.51.160.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.51.161.0/25
Down right: 212.51.161.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.51.161.13	A+PTR	fax.adista.fr
212.51.161.17	A+PTR	ns1.rmi.fr
212.51.161.18	A+PTR	ns3.rmi.fr
212.51.161.19	A+PTR	ns5.rmi.fr
212.51.161.24	PTR	c4-ncy.backbone.adista.fr
212.51.161.25	PTR	c3-ncy.backbone.adista.fr
212.51.161.26	PTR	c3-mtz.backbone.adista.fr
212.51.161.27	PTR	c3-stg.backbone.adista.fr
212.51.161.28	PTR	c3-bdx.backbone.adista.fr
212.51.161.28	PTR	c1-vno.backbone.adista.fr
212.51.161.29	PTR	c4-bdx.backbone.adista.fr
212.51.161.30	PTR	c3-can.backbone.adista.fr
212.51.161.30	PTR	c1-ete.backbone.adista.fr
212.51.161.31	PTR	c3-clm.backbone.adista.fr
212.51.161.36	PTR	bgp1-ncy.backbone.adista.fr
212.51.161.37	PTR	bgp2-ncy.backbone.adista.fr
212.51.161.39	PTR	bgp1-bdx.backbone.adista.fr
212.51.161.39	PTR	e4-sem.backbone.adista.fr
212.51.161.40	PTR	e2-stg.backbone.adista.fr
212.51.161.40	PTR	e1.3g.sj2.backbone.adista.fr
212.51.161.42	PTR	c1-th2.backbone.adista.fr
212.51.161.43	PTR	c2-rdb.backbone.adista.fr
212.51.161.44	PTR	e1.lns.sj1.backbone.adista.fr
212.51.161.45	PTR	e1-memonet.backbone.adista.fr
212.51.161.46	PTR	e2-tls.backbone.adista.fr
212.51.161.47	PTR	e1-stg.backbone.adista.fr
212.51.161.49	PTR	b1.adista.fr
212.51.161.49	PTR	mx.adista.fr
212.51.161.49	A	mx1.isaas.fr
212.51.161.50	A+PTR	tom.adista.fr
212.51.161.51	A+PTR	b3.adista.fr
212.51.161.51	A	mx.itnt.fr
212.51.161.51	A	wsup.adista.fr
212.51.161.72	PTR	e2-ces.c1-ces.backbone.adista.fr
212.51.161.73	PTR	c1-ces.e2-ces.backbone.adista.fr
212.51.161.74	PTR	c2-ces.c1-ces.backbone.adista.fr
212.51.161.77	PTR	e2-can.c3-can.backbone.adista.fr
212.51.161.77	PTR	c3-can.e2-can.backbone.adista.fr
212.51.161.81	PTR	c4-can.e2-can.backbone.adista.fr
212.51.161.82	PTR	e2-can.c4-can.backbone.adista.fr
212.51.161.82	PTR	c1-ete.e3-ete.backbone.adista.fr
212.51.161.89	PTR	e2-tls.e1-tls.backbone.adista.fr
212.51.161.89	PTR	c1-tls.c2-tls.backbone.adista.fr
212.51.161.90	PTR	e1-tls.e2-tls.backbone.adista.fr
212.51.161.99	A	fax.adista.fr
212.51.161.103	A	ventadis-voip2.adista.fr
212.51.161.129	PTR	bgp1-bdx.c4-bdx.backbone.adista.fr
212.51.161.130	PTR	c4-bdx.bgp1-bdx.backbone.adista.fr
212.51.161.177	PTR	e9-ncy.e1-asat.backbone.adista.fr
212.51.161.178	PTR	e1-asat.e9-ncy.backbone.adista.fr
212.51.161.178	PTR	c1-vno.c2-blc.backbone.adista.fr
212.51.161.189	PTR	e1-mlm.c1-th2.backbone.adista.fr
212.51.161.189	PTR	c1-mlm.e4-th2.backbone.adista.fr
212.51.161.190	PTR	c1-th2.e1-mlm.backbone.adista.fr
212.51.161.190	PTR	e4-th2.c1-mlm.backbone.adista.fr
212.51.161.197	PTR	e1-bdx.c4-bdx.backbone.adista.fr
212.51.161.198	PTR	c4-bdx.e1-bdx.backbone.adista.fr
212.51.161.205	PTR	bgp1-ncy.c4-ncy.backbone.adista.fr
212.51.161.221	PTR	bgp2-ncy.c4-ncy.backbone.adista.fr
212.51.161.222	PTR	c4-ncy.bgp2-ncy.backbone.adista.fr
212.51.161.229	PTR	bgp2-ncy.c3-ncy.backbone.adista.fr
212.51.161.230	PTR	c3-ncy.bgp2-ncy.backbone.adista.fr