Robtex

Up: 37.19.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 37.19.8.0/23
Down right: 37.19.10.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.19.8.5	PTR	isp-5-8-19-37.mediactivity.net
37.19.8.18	PTR	isp-18-8-19-37.mediactivity.net
37.19.8.18	A	mail.boetfort.be
37.19.8.18	A	mail.mernoire.be
37.19.8.26	A+PTR	26-8-19-37.fiber.bra.be.verixi.net
37.19.8.129	A+PTR	129-8-19-37.fiber.bra.be.verixi.net
37.19.8.131	A+PTR	131-8-19-37.fiber.bra.be.verixi.net
37.19.8.154	PTR	isp-154-8-19-37.mediactivity.net
37.19.8.154	A	mercury.arag.be
37.19.8.154	A	mail.arag.be
37.19.8.155	A+PTR	mail2.arag.be
37.19.8.157	A	www.arag.be
37.19.8.157	A	arag.be
37.19.8.229	PTR	isp-229-8-19-37.mediactivity.net
37.19.8.229	A	mail.memnon.com
37.19.8.229	A	mail2.memnon.com
37.19.8.249	PTR	isp-249-8-19-37.mediactivity.net
37.19.8.253	PTR	isp-253-8-19-37.mediactivity.net
37.19.8.255	PTR	isp-255-8-19-37.mediactivity.net
37.19.9.9	PTR	ns1.luxagency.lu
37.19.9.10	A+PTR	mail.luxagency.lu
37.19.9.10	A	luxagency.lu
37.19.9.12	A+PTR	web.luxagency.lu
37.19.9.12	A	luxagency.lu
37.19.9.12	A	ppcard.lu
37.19.9.15	PTR	shared.luxagency.lu
37.19.9.16	PTR	ns.ae.luxagency.lu
37.19.9.16	A	ns1.ae.luxagency.lu
37.19.9.17	A+PTR	mail.ae.luxagency.lu
37.19.9.18	PTR	only4info.com
37.19.9.18	A	www.girl2girl.eu
37.19.9.18	A	geishas4voyeur.com
37.19.9.19	PTR	web2.ae.luxagency.lu
37.19.9.20	PTR	camxweb.com
37.19.9.20	A	www.girl2girl.eu
37.19.9.20	A	geishas4voyeur.com
37.19.9.21	PTR	ns.be.luxagency.lu
37.19.9.21	A	ns1.be.luxagency.lu
37.19.9.22	PTR	mail.be.luxagency.lu
37.19.9.23	PTR	web.be.luxagency.lu
37.19.9.24	A	ns1.uk.luxagency.lu
37.19.9.27	PTR	mx2.luxagency.lu
37.19.9.27	A	mail2.luxagency.lu
37.19.9.27	A	mail2.be.luxagency.lu
37.19.9.28	PTR	ns2.luxagency.lu
37.19.9.28	A	ns2.be.luxagency.lu
37.19.9.28	A	ns2.ae.luxagency.lu
37.19.9.29	PTR	supermailing.com
37.19.9.73	A	www.sicli.be
37.19.9.139	A	lbas3.anscomputer.be
37.19.9.139	A	lbas2.anscomputer.be
37.19.10.3	A	pdu.mediactivity.net
37.19.10.3	A	vm-3-10-19-37.ip4.be
37.19.10.10	A+PTR	ns1.mediactivity.net
37.19.10.10	A	ns1.ip4.be
37.19.10.11	A	algemene-elektriciteit.be
37.19.10.11	A	mickael.be
37.19.10.12	A+PTR	mail.mediactivity.net
37.19.10.13	PTR	www.smsaction.be
37.19.10.13	A	lesms.be
37.19.10.13	A	mail.smsaction.be
37.19.10.19	A	vm-19-10-19-37.ip4.be
37.19.10.76	A	vacacionesweb.es
37.19.10.76	A	vacancesweb.be
37.19.10.76	A	www.vacancesweb.be
37.19.10.91	A+PTR	as3.anscomputer.be
37.19.10.91	A	lbas3.anscomputer.be
37.19.10.91	A	lbas2.anscomputer.be
37.19.10.106	A	ns2.anscomputer.be
37.19.11.70	A	funoc.be