Robtex

Up: 212.121.238.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.121.238.0/25
Down right: 212.121.238.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.121.238.2	PTR	ge1.arenys.mat.altecom.net
212.121.238.3	A+PTR	ip2383.mat.altecom.net
212.121.238.12	A	srcomm.auto-95.com
212.121.238.13	A+PTR	ip23813.mat.altecom.net
212.121.238.30	A+PTR	ip23830.mat.altecom.net
212.121.238.33	A+PTR	gw.codica.mat.altecom.net
212.121.238.48	A+PTR	ip23848.mat.altecom.net
212.121.238.55	A+PTR	ip23855.mat.altecom.net
212.121.238.58	A+PTR	ip23858.mat.altecom.net
212.121.238.58	A	radioarenysdemar.cat
212.121.238.58	A	radioarenysdemar.com
212.121.238.62	A+PTR	ip23862.mat.altecom.net
212.121.238.74	A+PTR	ip23874.mat.altecom.net
212.121.238.79	A+PTR	ip23879.mat.altecom.net
212.121.238.88	A+PTR	ip23888.mat.altecom.net
212.121.238.93	A+PTR	ip23893.mat.altecom.net
212.121.238.94	A+PTR	ip23894.mat.altecom.net
212.121.238.97	A+PTR	gw.iberpotash-barcelona.mat.altecom.net
212.121.238.131	A+PTR	ip238131.mat.altecom.net
212.121.238.145	PTR	gw.typemaker.mat.altecom.net
212.121.238.154	A+PTR	ip238154.mat.altecom.net
212.121.238.155	A+PTR	ip238155.mat.altecom.net
212.121.238.170	A+PTR	ip238170.mat.altecom.net
212.121.238.173	A+PTR	ip238173.mat.altecom.net
212.121.238.181	A+PTR	ip238181.mat.altecom.net
212.121.238.187	A+PTR	ip238187.mat.altecom.net
212.121.238.206	A+PTR	ip238206.mat.altecom.net
212.121.238.207	A+PTR	ip238207.mat.altecom.net
212.121.238.218	A+PTR	ip238218.mat.altecom.net
212.121.238.227	A+PTR	ip238227.mat.altecom.net
212.121.238.228	A+PTR	ip238228.mat.altecom.net
212.121.238.241	A+PTR	ip238241.mat.altecom.net
212.121.238.244	A+PTR	ip238244.mat.altecom.net
212.121.238.251	A+PTR	ip238251.mat.altecom.net
212.121.238.255	A+PTR	ip238255.mat.altecom.net