Robtex

Up: 213.144.238.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.144.239.0/25
Down right: 213.144.239.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.144.239.0	PTR	rt239bb144-213-0.routit.net
213.144.239.16	PTR	rt239bb144-213-16.promax.nl
213.144.239.16	A	promaxmsg11.promax.nl
213.144.239.16	A	mx1.promax.nl
213.144.239.17	PTR	rt239bb144-213-17.promax.nl
213.144.239.25	PTR	enterprise.promax.nl
213.144.239.25	A	ns.promax.nl
213.144.239.28	PTR	rt239bb144-213-28.promax.nl
213.144.239.28	A	cloudid.nl
213.144.239.28	A	r5.nl
213.144.239.30	PTR	rt239bb144-213-30.promax.nl
213.144.239.30	A	e-businesscompetencecenter.com
213.144.239.30	A	big-blue.nl
213.144.239.32	PTR	mx1.promax.nl
213.144.239.32	A	mx2.promax.nl
213.144.239.32	A	promaxmsg12.promax.nl
213.144.239.35	PTR	rt239bb144-213-35.promax.nl
213.144.239.35	A	activeweb.promax.nl
213.144.239.35	A	mail.promax.nl
213.144.239.45	A	rapoo.nl
213.144.239.86	A	server.com4online.nl
213.144.239.86	A	server.hifined.nl
213.144.239.99	PTR	rt239bb144-213-99.promax.nl
213.144.239.99	A	shelluniform.com
213.144.239.99	A	www.bgg.nl
213.144.239.102	PTR	rt239bb144-213-102.promax.nl
213.144.239.102	A	www.bgg.nl
213.144.239.102	A	granubandmacon.com
213.144.239.105	A+PTR	mail01.connections-it.com
213.144.239.105	A	mail.dennisvanveen.nl
213.144.239.106	PTR	rt239bb144-213-106.promax.nl
213.144.239.106	A	mail02.connections-it.com
213.144.239.108	PTR	rt239bb144-213-108.promax.nl
213.144.239.114	A	mail.bongerdhattem.nl
213.144.239.148	PTR	rt239bb144-213-148.routit.net
213.144.239.149	PTR	rt239bb144-213-149.routit.net
213.144.239.149	A	imnederlandservice.com
213.144.239.149	A	imnederlandservice.nl
213.144.239.171	PTR	rt239bb144-213-171.routit.net
213.144.239.171	A	mobiel.bis-bmwb.nl
213.144.239.244	A	mail.footcare.nl
213.144.239.255	PTR	rt239bb144-213-255.routit.net