Robtex

Up: 87.216.16.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 87.216.16.0/24
Down right: 87.216.17.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.216.16.1	PTR	1.16.216.87.static.jazztel.es
87.216.16.42	A+PTR	42.16.216.87.static.jazztel.es
87.216.16.45	A	45.16.216.87.static.jazztel.es
87.216.16.50	A+PTR	50.16.216.87.static.jazztel.es
87.216.16.50	A	acorreo.aljamir.com
87.216.16.70	A	teirlogingenieria.com
87.216.16.73	PTR	73.16.216.87.static.jazztel.es
87.216.16.80	A	mail.corredordeseguros.org
87.216.16.81	A	backliners.net
87.216.16.113	A	smtp.alliancefrancaisemadrid.net
87.216.16.195	A	www.orlicor.com
87.216.16.209	A+PTR	209.16.216.87.static.jazztel.es
87.216.16.224	A	mail.tiendaocasion.com
87.216.16.239	A	239.16.216.87.static.jazztel.es
87.216.17.22	PTR	22.17.216.87.static.jazztel.es
87.216.17.22	A	abrefacil.es
87.216.17.32	A	mx1.luike.com
87.216.17.35	A+PTR	35.17.216.87.static.jazztel.es
87.216.17.35	A	mrhide.entorno-digital.com
87.216.17.35	A	mrhide.entornodigital.com
87.216.17.42	A	42.17.216.87.static.jazztel.es
87.216.17.44	PTR	44.17.216.87.static.jazztel.es
87.216.17.44	A	www.easyparking.es
87.216.17.44	A	mail.cncpro.es
87.216.17.62	A	62.17.216.87.static.jazztel.es
87.216.17.81	A	procedo.es
87.216.17.81	A	incedere.es
87.216.17.114	A	exchange.normanbroadbent.es
87.216.17.122	PTR	122.17.216.87.static.jazztel.es
87.216.17.122	A	mail.enecworld.com
87.216.17.165	A	165.17.216.87.static.jazztel.es
87.216.17.178	A	178.17.216.87.static.jazztel.es
87.216.17.193	A+PTR	193.17.216.87.static.jazztel.es
87.216.17.196	PTR	196.17.216.87.static.jazztel.es
87.216.17.211	A	sanchezdelablanca.net