Robtex

Up: 66.163.144.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.163.144.0/22
Down right: 66.163.148.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.163.144.1	A+PTR	ns1.daktel.com
66.163.144.1	A	hostmaster.daktel.com
66.163.144.1	A	lumpy.daktel.com
66.163.144.2	A+PTR	adonis1.daktel.com
66.163.144.8	PTR	inbound.daktel.com
66.163.144.8	A	bankforward.com.mx3.daktel.rcimx.net
66.163.144.8	A	jamestowntravel.com.mx2.daktel.rcimx.net
66.163.144.10	PTR	oldemail.daktel.com
66.163.144.12	PTR	download.daktel.com
66.163.144.16	A+PTR	inboundmail2.daktel.com
66.163.144.17	A+PTR	ftpserver.daktel.com
66.163.144.18	A+PTR	outbound.daktel.com
66.163.144.19	PTR	production-net-144-19.com
66.163.144.19	A	smtp2.daktel.com
66.163.144.25	A+PTR	vella-eas.daktel.com
66.163.144.30	A	proteus.daktel.com
66.163.144.31	A+PTR	netreg.daktel.com
66.163.144.32	A+PTR	ftth-dhcp.daktel.com
66.163.144.33	A	backup-ftth-dhcp.daktel.com
66.163.144.34	A+PTR	backup-server.daktel.com
66.163.144.36	A+PTR	ldap-server.daktel.com
66.163.144.40	A+PTR	vyyo-pri.daktel.com
66.163.144.41	A+PTR	vyyo-sec.daktel.com
66.163.144.42	A	outbound-maillog.daktel.com
66.163.144.43	A+PTR	inbound-maillog.daktel.com
66.163.144.49	A	powervault.daktel.com
66.163.144.56	A	400filter-old.daktel.com
66.163.144.60	A+PTR	radius1.daktel.com
66.163.144.80	A	hdr-80.daktel.com
66.163.144.81	A	hdr-81.daktel.com
66.163.144.82	A+PTR	hdr-82.daktel.com
66.163.144.83	A+PTR	hdr-83.daktel.com
66.163.144.88	A	hdr-88.daktel.com
66.163.144.90	PTR	mail.daktel.com
66.163.144.90	A+PTR	mail1.daktel.com
66.163.144.90	A+PTR	smtp1.daktel.com
66.163.144.101	PTR	dctnet.com
66.163.144.101	A+PTR	www2.daktel.com
66.163.144.101	PTR	www.dctnet.com
66.163.144.105	A	speedtest.daktel.com
66.163.144.106	A+PTR	vnclink.daktel.com
66.163.144.107	A+PTR	hosted-domains.daktel.com
66.163.144.107	A	carringtondrug.com
66.163.144.249	A+PTR	dctnet-fo.daktel.com
66.163.144.250	A+PTR	dctnet.daktel.com
66.163.144.251	A+PTR	ebill.daktel.com
66.163.145.251	PTR	ns2.ictcgroup.net
66.163.146.20	A	mail.ics-intl.com
66.163.146.21	A	static-medina-ftth-21.daktel.net
66.163.146.56	A	medina-ftth-56.daktel.net
66.163.146.64	A	medina-ftth-64.daktel.net
66.163.146.105	A+PTR	medina-ftth-105.daktel.net
66.163.146.128	A+PTR	medina-ftth-128.daktel.net
66.163.146.139	A	medina-ftth-139.daktel.net
66.163.146.148	A	medina-ftth-148.daktel.net
66.163.147.160	A	wdsr-rur-c7-160.daktel.net
66.163.149.245	A	ypsi-e7-149-245.daktel.net
66.163.150.243	A+PTR	osi-bpon2-115.daktel.net
66.163.150.243	A	mail.dynamicsmarketinginc.com