Robtex

Up: 213.181.76.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 213.181.78.0/24
Down right: 213.181.79.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.181.78.0	PTR	usr-0-78-181-213.skynetlink.com
213.181.78.37	A	mail.tuedaddeoro.com
213.181.78.37	A	mail.euromarcosta.com
213.181.78.37	A	mail.jjmartinezperitaciones.com
213.181.78.80	A	garmaballo.com
213.181.78.111	A	goltra.ods.org
213.181.78.228	PTR	correo2.onnix.es
213.181.78.228	A	www.lambertocasion.com
213.181.78.228	A	plataformanauticavsp.com
213.181.78.233	PTR	usr-233-78-181-213.skynetlink.com
213.181.78.233	A	pachecoautomocion.com
213.181.78.233	A	coalproservicesprovieders.com
213.181.79.74	PTR	usr-74-79-181-213.telfy.com
213.181.79.255	PTR	usr-255-79-181-213.skynetlink.com