Robtex

Up: 88.151.18.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 88.151.19.0/25
Down right: 88.151.19.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.151.19.1	A+PTR	rpv.tributas.es
88.151.19.3	A+PTR	usr.tributas.es
88.151.19.10	A+PTR	correo.tributas.es
88.151.19.10	A	correo.srrpa.es
88.151.19.24	A+PTR	www.tributasenasturias.es
88.151.19.24	A	tributasenasturias.es
88.151.19.31	A	www.tributas.es
88.151.19.32	A	imap.sespa.es
88.151.19.32	A	correo.sespa.es
88.151.19.46	PTR	correomx.sespa.es
88.151.19.46	PTR	mail2.asturias.org
88.151.19.50	A+PTR	mail2.idepa.es
88.151.19.50	A	asturex.org
88.151.19.50	A	www.idepa.es
88.151.19.54	A	www3.idepa.es
88.151.19.56	A+PTR	mail.idepa.es
88.151.19.56	A	mail.idepa.info
88.151.19.56	A	dns1.idepa.es
88.151.19.59	A	ptasturias.es
88.151.19.59	A	srp.es
88.151.19.62	A	www.srp.es
88.151.19.62	A	www.ptasturias.es
88.151.19.62	A	asturiasindustria40.es
88.151.19.67	PTR	aes.ocs.educastur.es
88.151.19.67	PTR	sip.ocs.educastur.es
88.151.19.67	PTR	sipexternal.ocs.educastur.es
88.151.19.166	A+PTR	sedemovil.asturias.es
88.151.19.169	PTR	tematico8.asturias.es
88.151.19.170	A+PTR	srvcorreo.sespa.princast.es