Robtex

Up: 66.171.100.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 66.171.100.0/24
Down right: 66.171.101.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.171.100.16	PTR	c66-171-100-16.cablelan.net
66.171.100.23	PTR	c66-171-100-23.cablelan.net
66.171.100.27	PTR	c66-171-100-27.cablelan.net
66.171.100.28	PTR	c66-171-100-28.cablelan.net
66.171.100.38	A	mail.lslib.com
66.171.100.40	A+PTR	mail.quaaoutlodge.com
66.171.100.40	PTR	c66-171-100-40.cablelan.net
66.171.100.48	PTR	c66-171-100-48.cablelan.net
66.171.100.76	PTR	c66-171-100-76.cablelan.net
66.171.100.104	PTR	c66-171-100-104.cablelan.net
66.171.100.104	A	smtp2.kastein.com
66.171.100.104	A	smtp1.deuchar.ca
66.171.100.105	PTR	c66-171-100-105.cablelan.net
66.171.100.107	PTR	c66-171-100-107.cablelan.net
66.171.100.139	PTR	c66-171-100-139.cablelan.net
66.171.100.145	PTR	c66-171-100-145.cablelan.net
66.171.100.152	PTR	c66-171-100-152.cablelan.net
66.171.100.157	PTR	c66-171-100-157.cablelan.net
66.171.100.183	PTR	c66-171-100-183.cablelan.net
66.171.100.213	PTR	c66-171-100-213.cablelan.net
66.171.101.8	PTR	c66-171-101-8.cablelan.net
66.171.101.20	PTR	c66-171-101-20.cablelan.net
66.171.101.40	PTR	c66-171-101-40.cablelan.net
66.171.101.48	PTR	c66-171-101-48.cablelan.net
66.171.101.60	PTR	c66-171-101-60.cablelan.net
66.171.101.61	PTR	c66-171-101-61.cablelan.net
66.171.101.63	PTR	c66-171-101-63.cablelan.net
66.171.101.78	PTR	c66-171-101-78.cablelan.net
66.171.101.104	PTR	c66-171-101-104.cablelan.net
66.171.101.119	PTR	c66-171-101-119.cablelan.net
66.171.101.132	PTR	c66-171-101-132.cablelan.net
66.171.101.151	PTR	c66-171-101-151.cablelan.net
66.171.101.159	PTR	c66-171-101-159.cablelan.net
66.171.101.189	PTR	c66-171-101-189.cablelan.net
66.171.101.212	PTR	c66-171-101-212.cablelan.net
66.171.101.222	PTR	c66-171-101-222.cablelan.net
66.171.101.227	PTR	c66-171-101-227.cablelan.net
66.171.101.230	PTR	c66-171-101-230.cablelan.net
66.171.101.232	PTR	c66-171-101-232.cablelan.net
66.171.101.254	PTR	c66-171-101-254.cablelan.net