Robtex

Up: 80.244.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 80.244.48.0/21
Down right: 80.244.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.244.48.0	PTR	server-48-0.wipzona.es
80.244.48.1	PTR	router-bt.wipzona.es
80.244.48.10	A	ns2.wipzona.es
80.244.48.83	PTR	server-48-83.wipzona.es
80.244.48.250	A	wipzona.es
80.244.48.250	A	www.wipzona.es
80.244.48.250	A	ns.wipzona.es
80.244.48.251	A	www.wipzona.es
80.244.52.0	PTR	user-52-0.wipzona.es
80.244.52.2	PTR	user-52-2.wipzona.es
80.244.52.115	PTR	user-52-115.wipzona.es
80.244.53.19	PTR	user-53-19.wipzona.es
80.244.55.51	PTR	user-55-51.wipzona.es
80.244.55.127	A	viajesalameda.duckdns.org
80.244.56.242	PTR	user-56-242.wipzona.es
80.244.57.160	PTR	user-57-160.wipzona.es
80.244.57.240	PTR	user-57-240.wipzona.es
80.244.63.0	PTR	user-63-0.wipzona.es
80.244.63.2	PTR	user-63-2.wipzona.es
80.244.63.2	A	placerlandia.com
80.244.63.2	A	ecogym.es
80.244.63.64	A	smtp.hastacasa.com
80.244.63.64	A	amascarell.com
80.244.63.64	A	owa.amascarell.com