Robtex

Up: 216.66.192.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 216.66.192.0/21
Down right: 216.66.200.0/21

IP	Type	Hostname
216.66.192.0	PTR	216-66-192-0.static.look.ca
216.66.192.2	A+PTR	alpha.look.ca
216.66.192.2	A	mailmx.look.ca
216.66.192.3	A+PTR	beta.look.ca
216.66.192.3	A	mailmx.look.ca
216.66.192.4	A+PTR	gamma.look.ca
216.66.192.4	A	mailmx.look.ca
216.66.192.6	A	mailmx.look.ca
216.66.192.7	A	mailmx.look.ca
216.66.192.8	A	mailmx.look.ca
216.66.192.9	A	mailmx.look.ca
216.66.192.10	A	mailmx.look.ca
216.66.192.19	A	wind.look.ca
216.66.192.23	A	mx9.look.ca
216.66.192.25	A	hail.look.ca
216.66.192.25	A	mail.telnetmail.ca
216.66.193.21	PTR	216-66-193-21.static.look.ca
216.66.193.78	PTR	216-66-193-78.static.look.ca
216.66.193.111	PTR	216-66-193-111.static.look.ca
216.66.193.222	PTR	216-66-193-222.static.look.ca
216.66.194.4	A+PTR	d1.hosting101.com
216.66.194.4	A	ns1.hosting101.com
216.66.194.4	A	ns1.durham.net
216.66.194.5	A+PTR	d2.hosting101.com
216.66.194.10	PTR	c1.hosting101.com
216.66.194.129	A	emerald.look.ca
216.66.194.130	A	mypage.look.ca
216.66.194.131	PTR	216-66-194-131.static.look.ca
216.66.194.131	A	mypage.direct.ca
216.66.194.132	PTR	216-66-194-132.static.look.ca
216.66.194.132	A	webhome.look.ca
216.66.194.134	PTR	216-66-194-134.static.look.ca
216.66.194.250	A	video2.owenstewart.com
216.66.194.250	A	www.owenstewart.com
216.66.198.15	PTR	216-66-198-15.static.look.ca
216.66.201.134	PTR	216-66-201-134.static.look.ca
216.66.201.143	PTR	216-66-201-143.static.look.ca
216.66.201.151	PTR	216-66-201-151.static.look.ca
216.66.206.11	PTR	ns2.lvw1.com
216.66.206.12	PTR	ns1.lvw1.com
216.66.206.33	PTR	penshu.com
216.66.206.50	A	mail.crestar-limited.com
216.66.206.51	A	mail.crestar.ca
216.66.206.51	A	crestar.ca
216.66.206.93	PTR	mail.paprima.ca
216.66.206.103	PTR	www.fertichem.ca
216.66.206.221	PTR	mail.mck.ca
216.66.207.255	PTR	216-66-207-255.static.look.ca