Robtex

Up: 212.170.224.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.170.224.0/25
Down right: 212.170.224.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.170.224.20	A+PTR	externos.telefonicalearningservices.com
212.170.224.20	A	mail4.icampusbrasil.com
212.170.224.20	A	mail2.learn4sales.com
212.170.224.21	A	formacion.correos.es
212.170.224.22	PTR	noreply.telefonicalearningservices.com
212.170.224.22	A	mail1.superatebanbif.com.pe
212.170.224.22	A	mail2.codemadrid.org
212.170.224.52	A	bbvasoluciones.es