Robtex

Up: 217.63.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 217.63.48.0/21
Down right: 217.63.56.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.63.48.157	PTR	217-63-48-157.cable.dynamic.v4.ziggo.nl
217.63.48.157	A	mail.kruyt.biz
217.63.48.157	A	www.kruyt.biz
217.63.49.244	A+PTR	d93f31f4.cm-20.dynamic.ziggo.nl
217.63.49.244	A	thijsgrotenhuis.nl
217.63.51.131	A+PTR	d93f3383.cm-20.dynamic.ziggo.nl
217.63.53.121	A+PTR	217-63-53-121.cable.dynamic.v4.ziggo.nl
217.63.53.121	A	touwslager.com
217.63.56.246	PTR	217-63-56-246.cable.dynamic.v4.ziggo.nl
217.63.56.246	A	d93f38f6.cm-20.dynamic.ziggo.nl
217.63.56.246	A	webmtrove.ddns.net
217.63.57.31	A+PTR	d93f391f.cm-20.dynamic.ziggo.nl
217.63.57.31	A	triplelsquad.com
217.63.59.133	A+PTR	d93f3b85.cm-20.dynamic.ziggo.nl
217.63.59.133	A	groenendijk-online.nl
217.63.59.133	A	itereight.com
217.63.60.140	PTR	217-63-60-140.cable.dynamic.v4.ziggo.nl
217.63.60.140	A	btp34.nl
217.63.60.140	A	wjglerum.nl
217.63.60.231	PTR	217-63-60-231.cable.dynamic.v4.ziggo.nl
217.63.60.231	A	d93f3ce7.cm-20.dynamic.ziggo.nl
217.63.61.241	A+PTR	d93f3df1.cm-20.dynamic.ziggo.nl
217.63.61.241	A	codebeat.nl
217.63.61.241	A	www.codebeat.nl
217.63.63.1	A+PTR	d93f3f01.cm-20.dynamic.ziggo.nl
217.63.63.1	A	tty.dumontweb.com
217.63.63.182	A+PTR	d93f3fb6.cm-20.dynamic.ziggo.nl